Folded optics is an optical system in which the beam is bent in a way to make the optical path much longer than the size of the system. Prismaticbinoculars are a well-known example.
An early conventional film (35 mm) camera was designed by Tessina that used the concept of folded optics.
Ptolemy was the author of several scientific treatises, three of which were of continuing importance to later Byzantine, Islamic and European science. The first is the astronomical treatise now known as the Almagest, although it was originally entitled the "Mathematical Treatise" (Μαθηματικὴ Σύνταξις, Mathēmatikē Syntaxis) and then known as the "Great Treatise" (Ἡ Μεγάλη Σύνταξις, Ē Megálē Syntaxis). The second is the Geography, which is a thorough discussion of the geographic knowledge of the Greco-Roman world. This manuscript was used by Christopher Columbus as the map for his westward-bound path to Asia, in which he discovered the hitherto unknown lands of the Americas. The third is the astrological treatise in which he attempted to adapt horoscopic astrology to the Aristoteliannatural philosophy of his day. This is sometimes known as the Apotelesmatika (Ἀποτελεσματικά) but more commonly known as the Tetrabiblos from the Greek (Τετράβιβλος) meaning "Four Books" or by the Latin Quadripartitum.
La dioptrique (in English Dioptrique, Optics, or Dioptrics), is a short treatise published in 1637 included in one of the Essays written with Discourse on the Method by Rene Descartes. In this essay Descartes uses various models to understand the properties of light. This essay is known as Descartes' greatest contribution to optics, as it is the first publication of the Law of Refraction.
First Discourse: On Light
The first discourse captures Descartes' theories on the nature of light. In the first model, he compares light to a stick that allows a blind person to discern his environment through touch. Descartes says:
Descartes' second model on light uses his theory of the elements to demonstrate the rectilinear transmission of light as well as the movement of light through solid objects. He uses a metaphor of wine flowing through a vat of grapes, then exiting through a hole at the bottom of the vat.
Second Discourse: On Refraction
Descartes uses a tennis ball to create a proof for the laws of reflection and refraction in his third model. This was important because he was using real-world objects (in this case, a tennis ball) to construct mathematical theory. Descartes' third model creates a mathematical equation for the Law of Refraction, characterized by the angle of incidence equalling the angle of refraction. In today's notation, the law of refraction states,
Ordering points to identify the clustering structure (OPTICS) is an algorithm for finding density-based clusters in spatial data. It was presented by Mihael Ankerst, Markus M. Breunig, Hans-Peter Kriegel and Jörg Sander.
Its basic idea is similar to DBSCAN, but it addresses one of DBSCAN's major weaknesses: the problem of detecting meaningful clusters in data of varying density. In order to do so, the points of the database are (linearly) ordered such that points which are spatially closest become neighbors in the ordering. Additionally, a special distance is stored for each point that represents the density that needs to be accepted for a cluster in order to have both points belong to the same cluster. This is represented as a dendrogram.
Basic idea
Like DBSCAN, OPTICS requires two parameters: , which describes the maximum distance (radius) to consider, and , describing the number of points required to form a cluster. A point is a core point if at least points are found within its -neighborhood . Contrary to DBSCAN, OPTICS also considers points that are part of a more densely packed cluster, so each point is assigned a core distance that describes the distance to the th closest point:
A camera is an optical instrument for recording images, which may be stored locally, transmitted to another location, or both. The images may be individual still photographs or sequences of images constituting videos or movies. The word camera comes from camera obscura, which means "dark chamber" and is the Latin name of the original device for projecting an image of external reality onto a flat surface. The modern photographic camera evolved from the camera obscura. The functioning of the camera is very similar to the functioning of the human eye.
Functional description
A camera may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum. A still camera is an optical device which creates a single image of an object or scene, and records it on an electronic sensor or photographic film. All cameras use the same basic design: light enters an enclosed box through a converging lens and an image is recorded on a light-sensitive medium. A shutter mechanism controls the length of time that light can enter the camera. Most photographic cameras have functions that allow a person to view the scene to be recorded, allow for a desired part of the scene to be in focus, and to control the exposure so that it is not too bright or too dim. A display, often a liquid crystal display (LCD), permits the user to view scene to be recorded and settings such as ISO speed, exposure, and shutter speed.
The core group of generic top-level domains consists of the com, info, net, and org domains. In addition, the domains biz, name, and pro are also considered generic; however, these are designated as restricted, because registrations within them require proof of eligibility within the guidelines set for each.
Historically, the group of generic top-level domains included domains, created in the early development of the domain name system, that are now sponsored by designated agencies or organizations and are restricted to specific types of registrants. Thus, domains edu, gov, int, and mil are now considered sponsored top-level domains, much like the themed top-level domains (e.g., jobs). The entire group of domains that do not have a geographic or country designation (see country-code top-level domain) is still often referred to by the term generic TLDs.
Camera is a photography review that began its life in Lucerne, Switzerland, later distributed in many countries and languages. The magazine grew to its greatest international influence towards in latter half of its life of sixty years; on the leading edge of almost every important period in photography, Camera was often among the first publications to show the first works of now well-known photographers such as Edward Steichen, Robert Frank and Jeanloup Sieff. The magazine was slated to be re-launched on17 January 2013.
The early years
The first issue of Camera was published by the engineer Adolf Herz and book-publisher C.J. Bucher in June 1922. The magazine was first published in German. Making clear its aim to aid the development of the still-fledgling art of photography, this issue began with the following statement of intent:
With this issue we introduce ourselves to the public for the first time. We would like to say a few words about our aims. Our magazine will support artistic photography. We thought it expedient to show our readers an artist's work through ample selections of good-quality reproductions. Artists from all countries will be sharing their pictures. Hereon in every issue we will present eight pages of good reproductions. Participating artists will present their art styles in original essays. Articles on technical photographic subjects, written by authors the best in this field, will appear in the technical section. In brief reports we will comment on all new developments so that our readers can obtain an up-to-date view of photography. We invite all photographers and researchers of all countries who would like to bring technical information to our readers, to submit their articles. We will periodically conduct contests to encourage developing artists, and the best entries will receive a monetary award.
We hope our efforts will be conducive to the high aims of artistic photography and that our readers will support us.
Ophir® Folded Optics Zoom Lens with Disruptive Capabilities Designed for Reduced SWaP MWIR 10μm VGA
Ophir® LightIR 16-180mm f/3.6
Learn more: https://www.ophiropt.com/infrared/lenses/supir-16-180mm-f-3-6/?utm_source=youtubeproductvideo&utm_medium=youtubeproductvideo&utm_campaign=youtubeproductvideo
• The LightIR 16-180mm f/3.6 is a compact, thermal imaging lens optimized for smaller size 10µm pitch VGA FPA (focal plane array) detectors.
• It features a folded optics design that significantly reduces the length of the lens and, therefore, the overall size and weight of the optical system in which it is incorporated.
• The lens is 65% smaller than existing MWIR 10µm VGA lenses. This makes it ideal for the demanding requirements of reduced size, weight, and power (SWaP) and small gimbal thermal imaging applications, including drones and tactical UAV IR cameras, micro- and mini-tactical p...
published: 28 Dec 2020
How to Use the Readers + Keychain Case | ThinOptics | Readers + Reading Glasses
Get this product here:
https://www.thinoptics.com/collections/keychain
Experience convenience like never before with ThinOptics' 'Readers + Keychain Case'! This enlightening video guide demonstrates the genius behind the ultimate on-the-go reading glasses solution. Witness how these incredibly slim, durable glasses fit perfectly on your nose without any arms, providing clear vision when you need it. The highlight is the compact keychain case - small enough to attach to your keys, so your reading glasses are always within reach. Explore the efficiency and innovation that the 'Readers + Keychain Case' brings, and transform 'I forgot my glasses' situations into a thing of the past with ThinOptics.
_________________________________
We Are ThinOptics
We make the world’s thinnest reading glas...
published: 29 Jun 2023
Introducing the FoldIR 30-450mm f/3.4: high performance, long-range, ideal for small size gimbals
Visit product page: https://www.ophiropt.com/en/f/foldir-30-450mm-f-3-4?utm_source=youtube+30-450
Folded-Optics Cont. Zoom Lens for advanced unmanned aerial systems IR cameras
Introducing the FoldIR 30-450mm f/3.4 continuous zoom lens with Ophir's innovative folded optical design, offering a compact size while maintaining long optical lengths and improved tolerance sensitivity. This design ensures exceptional performance even in challenging environments, addressing stabilization and athermalization issues.
Its unique f/3.4 aperture guarantees superior image quality, surpassing larger aperture zoom lenses in diffraction limit MTF and IR signal collection. The lens features a built-in mechanical shutter for NUC control, enhancing image quality through Ophir's control system.
With a de...
published: 31 Aug 2023
Light Co. "Folded optics=small size" animation
From Light Co. website:
https://light.co/technology
The company says:
Folded optics = small size
Traditional DSLR cameras create photos by detecting light passed through a single large aperture and bulky lens barrel. The L16 is different. The L16 captures light through many small apertures and uses folded optics technology to bounce light off angled periscopic reflex mirrors and through slim, horizontally positioned lens barrels before reaching an optical sensor. The result is a camera capable of taking DSLR quality photos that can fit in the palm of your hand.
published: 23 Jun 2017
Time-Folded Optics: shrinking and enhancing camera lenses
With the rapid development of faster frame rates and more light-sensitive camera sensors, why aren't camera lenses quickly evolving as well? Researchers at the MIT Media Lab's Camera Culture group are addressing that question with a new way to utilize time and space to shrink camera lenses down while adding new functions such as selective zoom range and enhanced spectral resolution.
More information at: https://www.media.mit.edu/
License: CC-BY-4.0 (https://creativecommons.org/licenses/by-nc/4.0/)
published: 13 Aug 2018
Folded optics
Folded optics is an optical system in which the beam is bent in a way to make the optical path much longer than the size of the system. Prismatic binoculars are a well-known example. An early conventional film (35 mm) camera was designed by Tessina that used the concept of folded optics.
Fold mirrors are used to direct infrared light within the optical path of the James Webb Space Telescope. These optical fold mirrors are not to be confused with the observatory's deployable primary mirrors, which are folded inward to fit the telescope within the launch vehicle's payload fairing; when deployed, these segments are part of the three-mirror anastigmat design's primary element and don't serve as fold mirrors in the optical sense.
Source: https://en.wikipedia.org/wiki/Folded_optics
Created with...
Video shows what folded optics means. An optical system in which prisms and/or mirrors are used to reduce the overall physical length of the system.. Folded optics Meaning. How to pronounce, definition audio dictionary. How to say folded optics. Powered by MaryTTS, Wiktionary
published: 26 Apr 2015
I folded... #osmopocket3 #unboxing
published: 08 Dec 2024
Time-Folded Optics to shrink Camera Lenses
MIT researchers have developed novel photography optics dubbed “time-folded optics” that capture images based on the timing of reflecting light inside the optics, instead of the traditional approach that relies on the arrangement of optical components. These new principles open doors to new capabilities for time- or depth-sensitive cameras, which are not possible with conventional photography optics.
Video Source: MIT Media Lab
News Source: http://news.mit.edu/2018/novel-optics-ultrafast-cameras-create-new-possibilities-imaging-0813
*****************************************
See Recommended Products and Offers/Discounts/Coupons at https://www.amazon.com/shop/rajamanickamantonimuthu
*****************************************
#QPT #Camera #Imaging
Ophir® LightIR 16-180mm f/3.6
Learn more: https://www.ophiropt.com/infrared/lenses/supir-16-180mm-f-3-6/?utm_source=youtubeproductvideo&utm_medium=youtubeproductvideo&utm_campaign=youtubeproductvideo
• The LightIR 16-180mm f/3.6 is a compact, thermal imaging lens optimized for smaller size 10µm pitch VGA FPA (focal plane array) detectors.
• It features a folded optics design that significantly reduces the length of the lens and, therefore, the overall size and weight of the optical system in which it is incorporated.
• The lens is 65% smaller than existing MWIR 10µm VGA lenses. This makes it ideal for the demanding requirements of reduced size, weight, and power (SWaP) and small gimbal thermal imaging applications, including drones and tactical UAV IR cameras, micro- and mini-tactical payloads, and handheld thermal systems in the commercial, homeland security, and defense industries.
• Detection range up to 13.7km (for vehicle 2.3mX2.3m NATO target).
www.ophiropt.com/infrared
[email protected]
Ophir® LightIR 16-180mm f/3.6
Learn more: https://www.ophiropt.com/infrared/lenses/supir-16-180mm-f-3-6/?utm_source=youtubeproductvideo&utm_medium=youtubeproductvideo&utm_campaign=youtubeproductvideo
• The LightIR 16-180mm f/3.6 is a compact, thermal imaging lens optimized for smaller size 10µm pitch VGA FPA (focal plane array) detectors.
• It features a folded optics design that significantly reduces the length of the lens and, therefore, the overall size and weight of the optical system in which it is incorporated.
• The lens is 65% smaller than existing MWIR 10µm VGA lenses. This makes it ideal for the demanding requirements of reduced size, weight, and power (SWaP) and small gimbal thermal imaging applications, including drones and tactical UAV IR cameras, micro- and mini-tactical payloads, and handheld thermal systems in the commercial, homeland security, and defense industries.
• Detection range up to 13.7km (for vehicle 2.3mX2.3m NATO target).
www.ophiropt.com/infrared
[email protected]
Get this product here:
https://www.thinoptics.com/collections/keychain
Experience convenience like never before with ThinOptics' 'Readers + Keychain Case'! Thi...
Get this product here:
https://www.thinoptics.com/collections/keychain
Experience convenience like never before with ThinOptics' 'Readers + Keychain Case'! This enlightening video guide demonstrates the genius behind the ultimate on-the-go reading glasses solution. Witness how these incredibly slim, durable glasses fit perfectly on your nose without any arms, providing clear vision when you need it. The highlight is the compact keychain case - small enough to attach to your keys, so your reading glasses are always within reach. Explore the efficiency and innovation that the 'Readers + Keychain Case' brings, and transform 'I forgot my glasses' situations into a thing of the past with ThinOptics.
_________________________________
We Are ThinOptics
We make the world’s thinnest reading glasses in the world’s thinnest cases. They're ultra-slim, as thin as two credit cards and lighter than a pad of sticky notes.
They’re super durable readers & reading glasses that fit on the back of your phone, in your pocket; in your purse; in your purse pocket & more!
ThinOptics readers & reading glasses, along with their equally slim cases, are full fledged vision solutions that attach anywhere and go everywhere, so clear vision is Always With You.
///
Have you had a great experience with your ThinOptics vision solution? Let us know in the comments!
///
Shop ThinOptics Best Sellers:https://www.thinoptics.com/readers/best-sellers
///
Shop ThinOptics Readers:https://www.thinoptics.com/readers
///
Shop ThinOptics Reading Glasses:https://www.thinoptics.com/reading-glasses
///
Shop SHADO by ThinOptics Sunglasses:https://www.thinoptics.com/sunglasses
///
Find the Optimal Lens Strength for Your Eyes:https://www.thinoptics.com/clarity-kit-find-your-strength/clarity-kit
///
Printable Reading Glasses Strength Test:https://www.thinoptics.com/what-strength-reading-glasses-do-i-need
///
Where else you can find us:
TIK TOK: https://www.tiktok.com/@thinoptics
YOUTUBE: https://www.youtube.com/c/Thinoptics
IG: https://www.instagram.com/thinoptics/
FB: https://www.facebook.com/ThinOptics/
TWITTER: https://twitter.com/thinoptics
///
Learn about our Warranty and 30-Day Satisfaction Guarantee:https://www.thinoptics.com/warranty/
///
Got questions about our readers, reading glasses &/or cases? Read our most frequently asked questions:https://www.thinoptics.com/faq/
///
Find out how to get in touch with us: https://www.thinoptics.com/contact/
///
Read more about how we’re reinventing the corrective eyewear industry at the ThinOptics blog:
https://www.thinoptics.com/blog.html
///
Explore the Expression Collection:
https://www.thinoptics.com/expression-collection
Get this product here:
https://www.thinoptics.com/collections/keychain
Experience convenience like never before with ThinOptics' 'Readers + Keychain Case'! This enlightening video guide demonstrates the genius behind the ultimate on-the-go reading glasses solution. Witness how these incredibly slim, durable glasses fit perfectly on your nose without any arms, providing clear vision when you need it. The highlight is the compact keychain case - small enough to attach to your keys, so your reading glasses are always within reach. Explore the efficiency and innovation that the 'Readers + Keychain Case' brings, and transform 'I forgot my glasses' situations into a thing of the past with ThinOptics.
_________________________________
We Are ThinOptics
We make the world’s thinnest reading glasses in the world’s thinnest cases. They're ultra-slim, as thin as two credit cards and lighter than a pad of sticky notes.
They’re super durable readers & reading glasses that fit on the back of your phone, in your pocket; in your purse; in your purse pocket & more!
ThinOptics readers & reading glasses, along with their equally slim cases, are full fledged vision solutions that attach anywhere and go everywhere, so clear vision is Always With You.
///
Have you had a great experience with your ThinOptics vision solution? Let us know in the comments!
///
Shop ThinOptics Best Sellers:https://www.thinoptics.com/readers/best-sellers
///
Shop ThinOptics Readers:https://www.thinoptics.com/readers
///
Shop ThinOptics Reading Glasses:https://www.thinoptics.com/reading-glasses
///
Shop SHADO by ThinOptics Sunglasses:https://www.thinoptics.com/sunglasses
///
Find the Optimal Lens Strength for Your Eyes:https://www.thinoptics.com/clarity-kit-find-your-strength/clarity-kit
///
Printable Reading Glasses Strength Test:https://www.thinoptics.com/what-strength-reading-glasses-do-i-need
///
Where else you can find us:
TIK TOK: https://www.tiktok.com/@thinoptics
YOUTUBE: https://www.youtube.com/c/Thinoptics
IG: https://www.instagram.com/thinoptics/
FB: https://www.facebook.com/ThinOptics/
TWITTER: https://twitter.com/thinoptics
///
Learn about our Warranty and 30-Day Satisfaction Guarantee:https://www.thinoptics.com/warranty/
///
Got questions about our readers, reading glasses &/or cases? Read our most frequently asked questions:https://www.thinoptics.com/faq/
///
Find out how to get in touch with us: https://www.thinoptics.com/contact/
///
Read more about how we’re reinventing the corrective eyewear industry at the ThinOptics blog:
https://www.thinoptics.com/blog.html
///
Explore the Expression Collection:
https://www.thinoptics.com/expression-collection
Visit product page: https://www.ophiropt.com/en/f/foldir-30-450mm-f-3-4?utm_source=youtube+30-450
Folded-Optics Cont. Zoom Lens for advanced unmanned aerial systems IR cameras
Introducing the FoldIR 30-450mm f/3.4 continuous zoom lens with Ophir's innovative folded optical design, offering a compact size while maintaining long optical lengths and improved tolerance sensitivity. This design ensures exceptional performance even in challenging environments, addressing stabilization and athermalization issues.
Its unique f/3.4 aperture guarantees superior image quality, surpassing larger aperture zoom lenses in diffraction limit MTF and IR signal collection. The lens features a built-in mechanical shutter for NUC control, enhancing image quality through Ophir's control system.
With a detection range over 20km and a compact form-factor, this lens is the ideal for advanced unmanned aerial systems IR cameras.
*Requires export license
Key features:
- Efficient folded optics design for max. volume use
- Physical shutter for mechanical NUC performance
- Designed for MWIR 10μm SXGA sensors
- Ideal for small size aerial gimbals and payloads
- Detection range exceeds 20km
Visit product page: https://www.ophiropt.com/en/f/foldir-30-450mm-f-3-4?utm_source=youtube+30-450
Visit product page: https://www.ophiropt.com/en/f/foldir-30-450mm-f-3-4?utm_source=youtube+30-450
Folded-Optics Cont. Zoom Lens for advanced unmanned aerial systems IR cameras
Introducing the FoldIR 30-450mm f/3.4 continuous zoom lens with Ophir's innovative folded optical design, offering a compact size while maintaining long optical lengths and improved tolerance sensitivity. This design ensures exceptional performance even in challenging environments, addressing stabilization and athermalization issues.
Its unique f/3.4 aperture guarantees superior image quality, surpassing larger aperture zoom lenses in diffraction limit MTF and IR signal collection. The lens features a built-in mechanical shutter for NUC control, enhancing image quality through Ophir's control system.
With a detection range over 20km and a compact form-factor, this lens is the ideal for advanced unmanned aerial systems IR cameras.
*Requires export license
Key features:
- Efficient folded optics design for max. volume use
- Physical shutter for mechanical NUC performance
- Designed for MWIR 10μm SXGA sensors
- Ideal for small size aerial gimbals and payloads
- Detection range exceeds 20km
Visit product page: https://www.ophiropt.com/en/f/foldir-30-450mm-f-3-4?utm_source=youtube+30-450
From Light Co. website:
https://light.co/technology
The company says:
Folded optics = small size
Traditional DSLR cameras create photos by detecting light pa...
From Light Co. website:
https://light.co/technology
The company says:
Folded optics = small size
Traditional DSLR cameras create photos by detecting light passed through a single large aperture and bulky lens barrel. The L16 is different. The L16 captures light through many small apertures and uses folded optics technology to bounce light off angled periscopic reflex mirrors and through slim, horizontally positioned lens barrels before reaching an optical sensor. The result is a camera capable of taking DSLR quality photos that can fit in the palm of your hand.
From Light Co. website:
https://light.co/technology
The company says:
Folded optics = small size
Traditional DSLR cameras create photos by detecting light passed through a single large aperture and bulky lens barrel. The L16 is different. The L16 captures light through many small apertures and uses folded optics technology to bounce light off angled periscopic reflex mirrors and through slim, horizontally positioned lens barrels before reaching an optical sensor. The result is a camera capable of taking DSLR quality photos that can fit in the palm of your hand.
With the rapid development of faster frame rates and more light-sensitive camera sensors, why aren't camera lenses quickly evolving as well? Researchers at the ...
With the rapid development of faster frame rates and more light-sensitive camera sensors, why aren't camera lenses quickly evolving as well? Researchers at the MIT Media Lab's Camera Culture group are addressing that question with a new way to utilize time and space to shrink camera lenses down while adding new functions such as selective zoom range and enhanced spectral resolution.
More information at: https://www.media.mit.edu/
License: CC-BY-4.0 (https://creativecommons.org/licenses/by-nc/4.0/)
With the rapid development of faster frame rates and more light-sensitive camera sensors, why aren't camera lenses quickly evolving as well? Researchers at the MIT Media Lab's Camera Culture group are addressing that question with a new way to utilize time and space to shrink camera lenses down while adding new functions such as selective zoom range and enhanced spectral resolution.
More information at: https://www.media.mit.edu/
License: CC-BY-4.0 (https://creativecommons.org/licenses/by-nc/4.0/)
Folded optics is an optical system in which the beam is bent in a way to make the optical path much longer than the size of the system. Prismatic binoculars are...
Folded optics is an optical system in which the beam is bent in a way to make the optical path much longer than the size of the system. Prismatic binoculars are a well-known example. An early conventional film (35 mm) camera was designed by Tessina that used the concept of folded optics.
Fold mirrors are used to direct infrared light within the optical path of the James Webb Space Telescope. These optical fold mirrors are not to be confused with the observatory's deployable primary mirrors, which are folded inward to fit the telescope within the launch vehicle's payload fairing; when deployed, these segments are part of the three-mirror anastigmat design's primary element and don't serve as fold mirrors in the optical sense.
Source: https://en.wikipedia.org/wiki/Folded_optics
Created with WikipediaReaderReborn (c) WikipediaReader
Folded optics is an optical system in which the beam is bent in a way to make the optical path much longer than the size of the system. Prismatic binoculars are a well-known example. An early conventional film (35 mm) camera was designed by Tessina that used the concept of folded optics.
Fold mirrors are used to direct infrared light within the optical path of the James Webb Space Telescope. These optical fold mirrors are not to be confused with the observatory's deployable primary mirrors, which are folded inward to fit the telescope within the launch vehicle's payload fairing; when deployed, these segments are part of the three-mirror anastigmat design's primary element and don't serve as fold mirrors in the optical sense.
Source: https://en.wikipedia.org/wiki/Folded_optics
Created with WikipediaReaderReborn (c) WikipediaReader
Video shows what folded optics means. An optical system in which prisms and/or mirrors are used to reduce the overall physical length of the system.. Folded op...
Video shows what folded optics means. An optical system in which prisms and/or mirrors are used to reduce the overall physical length of the system.. Folded optics Meaning. How to pronounce, definition audio dictionary. How to say folded optics. Powered by MaryTTS, Wiktionary
Video shows what folded optics means. An optical system in which prisms and/or mirrors are used to reduce the overall physical length of the system.. Folded optics Meaning. How to pronounce, definition audio dictionary. How to say folded optics. Powered by MaryTTS, Wiktionary
MIT researchers have developed novel photography optics dubbed “time-folded optics” that capture images based on the timing of reflecting light inside the optic...
MIT researchers have developed novel photography optics dubbed “time-folded optics” that capture images based on the timing of reflecting light inside the optics, instead of the traditional approach that relies on the arrangement of optical components. These new principles open doors to new capabilities for time- or depth-sensitive cameras, which are not possible with conventional photography optics.
Video Source: MIT Media Lab
News Source: http://news.mit.edu/2018/novel-optics-ultrafast-cameras-create-new-possibilities-imaging-0813
*****************************************
See Recommended Products and Offers/Discounts/Coupons at https://www.amazon.com/shop/rajamanickamantonimuthu
*****************************************
#QPT #Camera #Imaging
MIT researchers have developed novel photography optics dubbed “time-folded optics” that capture images based on the timing of reflecting light inside the optics, instead of the traditional approach that relies on the arrangement of optical components. These new principles open doors to new capabilities for time- or depth-sensitive cameras, which are not possible with conventional photography optics.
Video Source: MIT Media Lab
News Source: http://news.mit.edu/2018/novel-optics-ultrafast-cameras-create-new-possibilities-imaging-0813
*****************************************
See Recommended Products and Offers/Discounts/Coupons at https://www.amazon.com/shop/rajamanickamantonimuthu
*****************************************
#QPT #Camera #Imaging
The Ptolemaic Dynasty of Ancient Egypt: From Ptolemy I to Cleopatra VII
The Ptolemaic dynasty in Ancient Egypt began under the rule of Ptolemy I Soter, whose goal was to make Egypt great again and he did that by putting the country back on solid economic and administrative footing, and it ended with Cleopatra VII. When Alexander the Great of Macedon died unexpectedly in 323 BCE he had amassed an enormous empire spanning from Egypt through Anatolia, Mesopotamia and parts of India. In order to stay away from the influence of the priests and officials at Memphis, Ptolemy I moved the capital from its traditional place at Memphis to Alexandria. Alexandria, a city established by Alexander the Great, grew and flourished under the Ptolemies. The city became more of a Greek city than an Egyptian one, with the port giving easy access to the sea and Greece, and with Gree...
published: 22 Feb 2022
The Last Days of Ptolemy Grey — Official Trailer | Apple TV+
Set your mind free. The Last Days of Ptolemy Grey starring Samuel L. Jackson is now streaming on Apple TV+ https://apple.co/_PtolemyGrey
Ptolemy Grey, an ailing man is forgotten by his family, by his friends, and by even himself. Suddenly left without his trusted caretaker and on the brink of sinking even deeper into a lonely dementia, Ptolemy is assigned to the care of orphaned teenager Robyn, played by Dominique Fishback. When they learn about a treatment that can restore Ptolemy’s dementia-addled memories, it begins a journey toward shocking truths about the past, present and future.
Song: “The Fire” by The Roots (feat. John Legend) https://apple.co/TheFire_RootsfeatLegend
Subscribe to Apple TV’s YouTube channel: https://apple.co/AppleTVYouTube
Follow Apple TV:
Instagram: https://...
published: 04 Feb 2022
Overly Sarcastic Podcast: The Ptolemies
Good lord. This is a giant mess of a family tree. Just... Just watch it and see for yourself.
Downloadable audio file can be found here: http://www.mediafire.com/file/7d2fkopglxaasjb/OSPodcast+12.m4a
And all other episodes can be found here: http://www.mediafire.com/?1t64h3ehtg3pe
PATREON: www.patreon.com/user?u=4664797
MERCH LINKS:
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published: 23 Feb 2017
Ptolemy I: The Founders of Egypt's Final Dynasty
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Fact Fi...
published: 31 May 2024
Ptolemy's Geocentric Model
Without modern instruments, it was very hard to understand what the planets were, especially since they seemed to wander independently from the stars. Ptolemy provided the definitive answer for the time being. Earth was the centre of the universe and all the heavenly bodies rotated around it.
For inquiry, consider the following:
1. Investigate the work of Aristarchus. What was his model of the universe and why? How did it differ from Ptolemy's?
2. Why is there no gale force wind blowing constantly as the Earth moves about the Sun? What is the cause of wind? How do hurricanes evolve?
3. What was it about the Ptolemaic model that allowed it to last for 1500 years, and what was it that eventually brought about it's demise?
4. Explain why you don't change position in a moving train when you j...
published: 03 Jul 2022
A New Pharaoh : The Life of Ptolemy I Soter
How did a Greek become the Pharoh on Egpyt? FIND OUT NOW!
__________________________________________________________________________
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#AncientEgypt #AncientGreece#AncientHistoryGuy
published: 15 Jun 2021
A Miraculous Proof (Ptolemy's Theorem) - Numberphile
Featuring Zvezdelina Stankova... Want more?
Part 2 (bringing in Pentagons and the Golden Ratio) is at: https://youtu.be/o3QBgkQi_HA
More links & stuff in full description below ↓↓↓
Zvezda's Numberphile playlist: http://bit.ly/zvezda_videos
Zvezda's webpage: https://math.berkeley.edu/~stankova/
Epic Circles: https://youtu.be/sG_6nlMZ8f4
Triangle Magic Highway: https://youtu.be/wVH4MS6v23U
Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile
We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. https://www.simonsfoundation.org/outreach/science-sandbox/
And support from Math For America - https://www.mathforamerica.org/
NUMBERPHILE
Website: http://...
published: 09 Feb 2020
The Twilight of Egyptian Civilization - The Greek Egypt (Ptolemy and Cleopatra) - Part 5
The History of Egypt: The Twilight of Egyptian Civilization - The Greek Egypt (Ptolemy and Cleopatra) - Part 5
#Egypt #SeeUinHistory #History
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published: 30 Dec 2020
Ptolemies Live Living Room, Burlington, ON, Canada 03.15.2025
published: 16 Mar 2025
Ptolemy's geocentric universe (aka Claudius Ptolemaeus' model)
clip from "The Universe -- Infinite Frontier" about astronomer/geographer/mathematician Ptolemy
The Ptolemaic dynasty in Ancient Egypt began under the rule of Ptolemy I Soter, whose goal was to make Egypt great again and he did that by putting the country ...
The Ptolemaic dynasty in Ancient Egypt began under the rule of Ptolemy I Soter, whose goal was to make Egypt great again and he did that by putting the country back on solid economic and administrative footing, and it ended with Cleopatra VII. When Alexander the Great of Macedon died unexpectedly in 323 BCE he had amassed an enormous empire spanning from Egypt through Anatolia, Mesopotamia and parts of India. In order to stay away from the influence of the priests and officials at Memphis, Ptolemy I moved the capital from its traditional place at Memphis to Alexandria. Alexandria, a city established by Alexander the Great, grew and flourished under the Ptolemies. The city became more of a Greek city than an Egyptian one, with the port giving easy access to the sea and Greece, and with Greece becoming the language of both commerce and government.
A thing to note about the Ptolemies, although they were Pharaohs of Egypt, they didn’t learn the Egyptian language and pretty much just stayed in Alexandria (which they had made the new capital, moving it from the traditional capital of Memphis). They used Greek for all of their administrative documents, and married within their own family to keep the bloodline pure and also keep their wealth in the family.
— SUPPORT US VIA OUR PATREON—
https://www.patreon.com/join/whencyclopedia
— BUY OUR MERCH —
https://www.worldhistory.store/
— CHAPTERS —
0:00 Introduction
0:51 Lead Up To The Ptolemaic Dynasty
3:50 Egypt During the Ptolemaic Dynasty
7:48 The Ptolemy Family Tree
16:49 Outro
— WANT TO KNOW MORE? —
Ptolemaic Dynasty https://www.worldhistory.org/Ptolemaic_Dynasty/
Ptolemy I https://www.worldhistory.org/Ptolemy_I/
Ptolemy XIII Theos Philopator https://www.worldhistory.org/Ptolemy_XIII_Theos_Philopator/
Arsinoe II Philadelphus https://www.worldhistory.org/Arsinoe_II_Philadelphus/
Cleopatra VII https://www.worldhistory.org/Cleopatra_VII/
The Economy of Ptolemaic Egypt https://www.worldhistory.org/article/1256/the-economy-of-ptolemaic-egypt/
Berenika II Euergetis https://www.worldhistory.org/Berenice_II_Euergetis/
— WATCH NEXT —
Cleopatra VII Philopator: the Last Queen of Ancient Egypt https://www.youtube.com/watch?v=J6bM6ElVO5k
7 Surprising Stories from Herodotus' Histories https://www.youtube.com/watch?v=QRf1jUgXRqQ
Alexander the Great: Life and Reign of the King of the Macedonian Empire https://www.youtube.com/watch?v=_E7JX-rVdFk
The Seven Wonders of the Ancient World: an Overview https://www.youtube.com/watch?v=1YWPMZ6pHm8
Comparing Two Ancient Civilisations: Ancient Egypt vs. Mesopotamia https://www.youtube.com/watch?v=EwY-ziBL1Jw
— ATTRIBUTIONS —
You can find all attribution and credits for images, animations, graphics and music here - https://worldhistory.typehut.com/the-ptolemaic-dynasty-of-ancient-egypt-from-ptolemy-i-to-cleopatra-vii-images-and-attributions-8317
The music used in this recording is the intellectual copyright of Michael Levy, a prolific composer for the recreated lyres of antiquity, and used with the creator's permission. Michael Levy's music is available to stream at all the major digital music platforms. Find out more on:
https://www.ancientlyre.com
https://open.spotify.com/artist/7Dx2vFEg8DmOJ5YCRm4A5v?si=emacIH9CRieFNGXRUyJ9
https://www.youtube.com/channel/UCJ1X6F7lGMEadnNETSzTv8A
— THUMBNAIL IMAGE —
https://www.worldhistory.org/image/15205/family-tree-of-the-ptolemaic-dynasty-of-egypt-305/
Simeon Netchev
CC BY NC SA 4.0 - https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en
https://en.wikipedia.org/wiki/File:Ptolemy_I_as_Pharaoh_of_Egypt.jpg
Stella
CC BY SA 4.0 - https://creativecommons.org/licenses/by-sa/4.0/
World History Encyclopedia
www.worldhistory.org
#ptolemy #ptolemaicdynasty #cleopatravii
The Ptolemaic dynasty in Ancient Egypt began under the rule of Ptolemy I Soter, whose goal was to make Egypt great again and he did that by putting the country back on solid economic and administrative footing, and it ended with Cleopatra VII. When Alexander the Great of Macedon died unexpectedly in 323 BCE he had amassed an enormous empire spanning from Egypt through Anatolia, Mesopotamia and parts of India. In order to stay away from the influence of the priests and officials at Memphis, Ptolemy I moved the capital from its traditional place at Memphis to Alexandria. Alexandria, a city established by Alexander the Great, grew and flourished under the Ptolemies. The city became more of a Greek city than an Egyptian one, with the port giving easy access to the sea and Greece, and with Greece becoming the language of both commerce and government.
A thing to note about the Ptolemies, although they were Pharaohs of Egypt, they didn’t learn the Egyptian language and pretty much just stayed in Alexandria (which they had made the new capital, moving it from the traditional capital of Memphis). They used Greek for all of their administrative documents, and married within their own family to keep the bloodline pure and also keep their wealth in the family.
— SUPPORT US VIA OUR PATREON—
https://www.patreon.com/join/whencyclopedia
— BUY OUR MERCH —
https://www.worldhistory.store/
— CHAPTERS —
0:00 Introduction
0:51 Lead Up To The Ptolemaic Dynasty
3:50 Egypt During the Ptolemaic Dynasty
7:48 The Ptolemy Family Tree
16:49 Outro
— WANT TO KNOW MORE? —
Ptolemaic Dynasty https://www.worldhistory.org/Ptolemaic_Dynasty/
Ptolemy I https://www.worldhistory.org/Ptolemy_I/
Ptolemy XIII Theos Philopator https://www.worldhistory.org/Ptolemy_XIII_Theos_Philopator/
Arsinoe II Philadelphus https://www.worldhistory.org/Arsinoe_II_Philadelphus/
Cleopatra VII https://www.worldhistory.org/Cleopatra_VII/
The Economy of Ptolemaic Egypt https://www.worldhistory.org/article/1256/the-economy-of-ptolemaic-egypt/
Berenika II Euergetis https://www.worldhistory.org/Berenice_II_Euergetis/
— WATCH NEXT —
Cleopatra VII Philopator: the Last Queen of Ancient Egypt https://www.youtube.com/watch?v=J6bM6ElVO5k
7 Surprising Stories from Herodotus' Histories https://www.youtube.com/watch?v=QRf1jUgXRqQ
Alexander the Great: Life and Reign of the King of the Macedonian Empire https://www.youtube.com/watch?v=_E7JX-rVdFk
The Seven Wonders of the Ancient World: an Overview https://www.youtube.com/watch?v=1YWPMZ6pHm8
Comparing Two Ancient Civilisations: Ancient Egypt vs. Mesopotamia https://www.youtube.com/watch?v=EwY-ziBL1Jw
— ATTRIBUTIONS —
You can find all attribution and credits for images, animations, graphics and music here - https://worldhistory.typehut.com/the-ptolemaic-dynasty-of-ancient-egypt-from-ptolemy-i-to-cleopatra-vii-images-and-attributions-8317
The music used in this recording is the intellectual copyright of Michael Levy, a prolific composer for the recreated lyres of antiquity, and used with the creator's permission. Michael Levy's music is available to stream at all the major digital music platforms. Find out more on:
https://www.ancientlyre.com
https://open.spotify.com/artist/7Dx2vFEg8DmOJ5YCRm4A5v?si=emacIH9CRieFNGXRUyJ9
https://www.youtube.com/channel/UCJ1X6F7lGMEadnNETSzTv8A
— THUMBNAIL IMAGE —
https://www.worldhistory.org/image/15205/family-tree-of-the-ptolemaic-dynasty-of-egypt-305/
Simeon Netchev
CC BY NC SA 4.0 - https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en
https://en.wikipedia.org/wiki/File:Ptolemy_I_as_Pharaoh_of_Egypt.jpg
Stella
CC BY SA 4.0 - https://creativecommons.org/licenses/by-sa/4.0/
World History Encyclopedia
www.worldhistory.org
#ptolemy #ptolemaicdynasty #cleopatravii
Set your mind free. The Last Days of Ptolemy Grey starring Samuel L. Jackson is now streaming on Apple TV+ https://apple.co/_PtolemyGrey
Ptolemy Grey, an aili...
Set your mind free. The Last Days of Ptolemy Grey starring Samuel L. Jackson is now streaming on Apple TV+ https://apple.co/_PtolemyGrey
Ptolemy Grey, an ailing man is forgotten by his family, by his friends, and by even himself. Suddenly left without his trusted caretaker and on the brink of sinking even deeper into a lonely dementia, Ptolemy is assigned to the care of orphaned teenager Robyn, played by Dominique Fishback. When they learn about a treatment that can restore Ptolemy’s dementia-addled memories, it begins a journey toward shocking truths about the past, present and future.
Song: “The Fire” by The Roots (feat. John Legend) https://apple.co/TheFire_RootsfeatLegend
Subscribe to Apple TV’s YouTube channel: https://apple.co/AppleTVYouTube
Follow Apple TV:
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More from Apple TV: https://apple.co/32qgOEJ
Apple TV+ is a streaming service with original stories from the most creative minds in TV and film. Watch now on the Apple TV app: https://apple.co/_AppleTVapp
#PtolemyGrey #Trailer #AppleTV
Set your mind free. The Last Days of Ptolemy Grey starring Samuel L. Jackson is now streaming on Apple TV+ https://apple.co/_PtolemyGrey
Ptolemy Grey, an ailing man is forgotten by his family, by his friends, and by even himself. Suddenly left without his trusted caretaker and on the brink of sinking even deeper into a lonely dementia, Ptolemy is assigned to the care of orphaned teenager Robyn, played by Dominique Fishback. When they learn about a treatment that can restore Ptolemy’s dementia-addled memories, it begins a journey toward shocking truths about the past, present and future.
Song: “The Fire” by The Roots (feat. John Legend) https://apple.co/TheFire_RootsfeatLegend
Subscribe to Apple TV’s YouTube channel: https://apple.co/AppleTVYouTube
Follow Apple TV:
Instagram: https://instagram.com/AppleTV
Facebook: https://facebook.com/AppleTV
Twitter: https://twitter.com/AppleTV
Giphy: https://giphy.com/AppleTV
More from Apple TV: https://apple.co/32qgOEJ
Apple TV+ is a streaming service with original stories from the most creative minds in TV and film. Watch now on the Apple TV app: https://apple.co/_AppleTVapp
#PtolemyGrey #Trailer #AppleTV
Good lord. This is a giant mess of a family tree. Just... Just watch it and see for yourself.
Downloadable audio file can be found here: http://www.mediafire.c...
Good lord. This is a giant mess of a family tree. Just... Just watch it and see for yourself.
Downloadable audio file can be found here: http://www.mediafire.com/file/7d2fkopglxaasjb/OSPodcast+12.m4a
And all other episodes can be found here: http://www.mediafire.com/?1t64h3ehtg3pe
PATREON: www.patreon.com/user?u=4664797
MERCH LINKS:
Shirts - https://overlysarcasticproducts.threadless.com/designs
All the other stuff - http://www.cafepress.com/OverlySarcasticProducts
Find us on Twitter @OSPYouTube!
Good lord. This is a giant mess of a family tree. Just... Just watch it and see for yourself.
Downloadable audio file can be found here: http://www.mediafire.com/file/7d2fkopglxaasjb/OSPodcast+12.m4a
And all other episodes can be found here: http://www.mediafire.com/?1t64h3ehtg3pe
PATREON: www.patreon.com/user?u=4664797
MERCH LINKS:
Shirts - https://overlysarcasticproducts.threadless.com/designs
All the other stuff - http://www.cafepress.com/OverlySarcasticProducts
Find us on Twitter @OSPYouTube!
Head to Squarespace.com for a free trial, and when you're ready to launch, go to http://squarespace.com/biographics to save 10% off on your first purchase of a ...
Head to Squarespace.com for a free trial, and when you're ready to launch, go to http://squarespace.com/biographics to save 10% off on your first purchase of a website/domain using the code BIOGRAPHICS
→ Subscribe for new videos at least twice a week!
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Love content? Check out our other YouTube Channels:
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Storyrant: https://www.youtube.com/@UC6Sk2h2WsYMxnGERAH_FbGg
OEI analog horror experiment: https://www.youtube.com/@UCsz5l0hY67TGoJR0CZiWVnA
Free Scifi-Horror Ebook: https://dl.bookfunnel.com/1cw07o2uyb
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Untitled Side Channel: https://www.youtube.com/@untitledsidechannel
Twitter: https://twitter.com/KarlSmallwood
Further Reading:
Samuel Sharpe - The History of Egypt under the Ptolemies
C. A. Kincaid - Successors of Alexander the Great
Ian Shaw - The Oxford History of Ancient Egypt
Diodorus Siculus - Library of History
Livius
WorldHistory
Head to Squarespace.com for a free trial, and when you're ready to launch, go to http://squarespace.com/biographics to save 10% off on your first purchase of a website/domain using the code BIOGRAPHICS
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Storyrant: https://www.youtube.com/@UC6Sk2h2WsYMxnGERAH_FbGg
OEI analog horror experiment: https://www.youtube.com/@UCsz5l0hY67TGoJR0CZiWVnA
Free Scifi-Horror Ebook: https://dl.bookfunnel.com/1cw07o2uyb
Link Tree to Other Books and Socials: https://linktr.ee/EricMalikyte
Karl's Socials:
Fact Fiend: https://www.youtube.com/@FactFiend
Wiki Weekends: https://www.youtube.com/@wikiweekends
Untitled Side Channel: https://www.youtube.com/@untitledsidechannel
Twitter: https://twitter.com/KarlSmallwood
Further Reading:
Samuel Sharpe - The History of Egypt under the Ptolemies
C. A. Kincaid - Successors of Alexander the Great
Ian Shaw - The Oxford History of Ancient Egypt
Diodorus Siculus - Library of History
Livius
WorldHistory
Without modern instruments, it was very hard to understand what the planets were, especially since they seemed to wander independently from the stars. Ptolemy p...
Without modern instruments, it was very hard to understand what the planets were, especially since they seemed to wander independently from the stars. Ptolemy provided the definitive answer for the time being. Earth was the centre of the universe and all the heavenly bodies rotated around it.
For inquiry, consider the following:
1. Investigate the work of Aristarchus. What was his model of the universe and why? How did it differ from Ptolemy's?
2. Why is there no gale force wind blowing constantly as the Earth moves about the Sun? What is the cause of wind? How do hurricanes evolve?
3. What was it about the Ptolemaic model that allowed it to last for 1500 years, and what was it that eventually brought about it's demise?
4. Explain why you don't change position in a moving train when you jump up in the air. Why does the train not move out from under you?
5. Use this website as a starting point to do some research and reporting into the great minds that have influenced our understanding of the heavens: https://starchild.gsfc.nasa.gov/docs/StarChild/universe_level2/cosmology.html
6. In Western society, we often hear only about the Greeks and perhaps the Egyptians, with regard to astronomy. Find one major astronomical contribution made by the Chinese, the Indian and at least one First Nation.
Without modern instruments, it was very hard to understand what the planets were, especially since they seemed to wander independently from the stars. Ptolemy provided the definitive answer for the time being. Earth was the centre of the universe and all the heavenly bodies rotated around it.
For inquiry, consider the following:
1. Investigate the work of Aristarchus. What was his model of the universe and why? How did it differ from Ptolemy's?
2. Why is there no gale force wind blowing constantly as the Earth moves about the Sun? What is the cause of wind? How do hurricanes evolve?
3. What was it about the Ptolemaic model that allowed it to last for 1500 years, and what was it that eventually brought about it's demise?
4. Explain why you don't change position in a moving train when you jump up in the air. Why does the train not move out from under you?
5. Use this website as a starting point to do some research and reporting into the great minds that have influenced our understanding of the heavens: https://starchild.gsfc.nasa.gov/docs/StarChild/universe_level2/cosmology.html
6. In Western society, we often hear only about the Greeks and perhaps the Egyptians, with regard to astronomy. Find one major astronomical contribution made by the Chinese, the Indian and at least one First Nation.
How did a Greek become the Pharoh on Egpyt? FIND OUT NOW!
__________________________________________________________________________
SUBSCRIBE NOW : https:/...
How did a Greek become the Pharoh on Egpyt? FIND OUT NOW!
__________________________________________________________________________
SUBSCRIBE NOW : https://bit.ly/3aYZCOh
PATREON : https://bit.ly/3b0VixZ
MERCH : https://bit.ly/2X4d8rX
__________________________________________________________________________
Music provided by No Copyright Music
#AncientEgypt #AncientGreece#AncientHistoryGuy
How did a Greek become the Pharoh on Egpyt? FIND OUT NOW!
__________________________________________________________________________
SUBSCRIBE NOW : https://bit.ly/3aYZCOh
PATREON : https://bit.ly/3b0VixZ
MERCH : https://bit.ly/2X4d8rX
__________________________________________________________________________
Music provided by No Copyright Music
#AncientEgypt #AncientGreece#AncientHistoryGuy
Featuring Zvezdelina Stankova... Want more?
Part 2 (bringing in Pentagons and the Golden Ratio) is at: https://youtu.be/o3QBgkQi_HA
More links & stuff in full ...
Featuring Zvezdelina Stankova... Want more?
Part 2 (bringing in Pentagons and the Golden Ratio) is at: https://youtu.be/o3QBgkQi_HA
More links & stuff in full description below ↓↓↓
Zvezda's Numberphile playlist: http://bit.ly/zvezda_videos
Zvezda's webpage: https://math.berkeley.edu/~stankova/
Epic Circles: https://youtu.be/sG_6nlMZ8f4
Triangle Magic Highway: https://youtu.be/wVH4MS6v23U
Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile
We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. https://www.simonsfoundation.org/outreach/science-sandbox/
And support from Math For America - https://www.mathforamerica.org/
NUMBERPHILE
Website: http://www.numberphile.com/
Numberphile on Facebook: http://www.facebook.com/numberphile
Numberphile tweets: https://twitter.com/numberphile
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Additional editing and animation by Pete McPartlan
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Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/
Brady's latest videos across all channels: http://www.bradyharanblog.com/
Sign up for (occasional) emails: http://eepurl.com/YdjL9
Featuring Zvezdelina Stankova... Want more?
Part 2 (bringing in Pentagons and the Golden Ratio) is at: https://youtu.be/o3QBgkQi_HA
More links & stuff in full description below ↓↓↓
Zvezda's Numberphile playlist: http://bit.ly/zvezda_videos
Zvezda's webpage: https://math.berkeley.edu/~stankova/
Epic Circles: https://youtu.be/sG_6nlMZ8f4
Triangle Magic Highway: https://youtu.be/wVH4MS6v23U
Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile
We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. https://www.simonsfoundation.org/outreach/science-sandbox/
And support from Math For America - https://www.mathforamerica.org/
NUMBERPHILE
Website: http://www.numberphile.com/
Numberphile on Facebook: http://www.facebook.com/numberphile
Numberphile tweets: https://twitter.com/numberphile
Subscribe: http://bit.ly/Numberphile_Sub
Videos by Brady Haran
Additional editing and animation by Pete McPartlan
Patreon: http://www.patreon.com/numberphile
Numberphile T-Shirts and Merch: https://teespring.com/stores/numberphile
Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/
Brady's latest videos across all channels: http://www.bradyharanblog.com/
Sign up for (occasional) emails: http://eepurl.com/YdjL9
The History of Egypt: The Twilight of Egyptian Civilization - The Greek Egypt (Ptolemy and Cleopatra) - Part 5
#Egypt #SeeUinHistory #History
Check out o...
The History of Egypt: The Twilight of Egyptian Civilization - The Greek Egypt (Ptolemy and Cleopatra) - Part 5
#Egypt #SeeUinHistory #History
Check out our comics:
Japanese Mythology in Comics: The Essential - https://amzn.to/3nCv1dn
Eros and Psyche: The Quest for Love - https://amzn.to/2I9XrLt
Medusa: The Cursed Priestess - https://amzn.to/34Jf5O0
The History of Egypt: The Twilight of Egyptian Civilization - The Greek Egypt (Ptolemy and Cleopatra) - Part 5
#Egypt #SeeUinHistory #History
Check out our comics:
Japanese Mythology in Comics: The Essential - https://amzn.to/3nCv1dn
Eros and Psyche: The Quest for Love - https://amzn.to/2I9XrLt
Medusa: The Cursed Priestess - https://amzn.to/34Jf5O0
Ophir® LightIR 16-180mm f/3.6
Learn more: https://www.ophiropt.com/infrared/lenses/supir-16-180mm-f-3-6/?utm_source=youtubeproductvideo&utm_medium=youtubeproductvideo&utm_campaign=youtubeproductvideo
• The LightIR 16-180mm f/3.6 is a compact, thermal imaging lens optimized for smaller size 10µm pitch VGA FPA (focal plane array) detectors.
• It features a folded optics design that significantly reduces the length of the lens and, therefore, the overall size and weight of the optical system in which it is incorporated.
• The lens is 65% smaller than existing MWIR 10µm VGA lenses. This makes it ideal for the demanding requirements of reduced size, weight, and power (SWaP) and small gimbal thermal imaging applications, including drones and tactical UAV IR cameras, micro- and mini-tactical payloads, and handheld thermal systems in the commercial, homeland security, and defense industries.
• Detection range up to 13.7km (for vehicle 2.3mX2.3m NATO target).
www.ophiropt.com/infrared
[email protected]
Get this product here:
https://www.thinoptics.com/collections/keychain
Experience convenience like never before with ThinOptics' 'Readers + Keychain Case'! This enlightening video guide demonstrates the genius behind the ultimate on-the-go reading glasses solution. Witness how these incredibly slim, durable glasses fit perfectly on your nose without any arms, providing clear vision when you need it. The highlight is the compact keychain case - small enough to attach to your keys, so your reading glasses are always within reach. Explore the efficiency and innovation that the 'Readers + Keychain Case' brings, and transform 'I forgot my glasses' situations into a thing of the past with ThinOptics.
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We make the world’s thinnest reading glasses in the world’s thinnest cases. They're ultra-slim, as thin as two credit cards and lighter than a pad of sticky notes.
They’re super durable readers & reading glasses that fit on the back of your phone, in your pocket; in your purse; in your purse pocket & more!
ThinOptics readers & reading glasses, along with their equally slim cases, are full fledged vision solutions that attach anywhere and go everywhere, so clear vision is Always With You.
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Visit product page: https://www.ophiropt.com/en/f/foldir-30-450mm-f-3-4?utm_source=youtube+30-450
Folded-Optics Cont. Zoom Lens for advanced unmanned aerial systems IR cameras
Introducing the FoldIR 30-450mm f/3.4 continuous zoom lens with Ophir's innovative folded optical design, offering a compact size while maintaining long optical lengths and improved tolerance sensitivity. This design ensures exceptional performance even in challenging environments, addressing stabilization and athermalization issues.
Its unique f/3.4 aperture guarantees superior image quality, surpassing larger aperture zoom lenses in diffraction limit MTF and IR signal collection. The lens features a built-in mechanical shutter for NUC control, enhancing image quality through Ophir's control system.
With a detection range over 20km and a compact form-factor, this lens is the ideal for advanced unmanned aerial systems IR cameras.
*Requires export license
Key features:
- Efficient folded optics design for max. volume use
- Physical shutter for mechanical NUC performance
- Designed for MWIR 10μm SXGA sensors
- Ideal for small size aerial gimbals and payloads
- Detection range exceeds 20km
Visit product page: https://www.ophiropt.com/en/f/foldir-30-450mm-f-3-4?utm_source=youtube+30-450
From Light Co. website:
https://light.co/technology
The company says:
Folded optics = small size
Traditional DSLR cameras create photos by detecting light passed through a single large aperture and bulky lens barrel. The L16 is different. The L16 captures light through many small apertures and uses folded optics technology to bounce light off angled periscopic reflex mirrors and through slim, horizontally positioned lens barrels before reaching an optical sensor. The result is a camera capable of taking DSLR quality photos that can fit in the palm of your hand.
With the rapid development of faster frame rates and more light-sensitive camera sensors, why aren't camera lenses quickly evolving as well? Researchers at the MIT Media Lab's Camera Culture group are addressing that question with a new way to utilize time and space to shrink camera lenses down while adding new functions such as selective zoom range and enhanced spectral resolution.
More information at: https://www.media.mit.edu/
License: CC-BY-4.0 (https://creativecommons.org/licenses/by-nc/4.0/)
Folded optics is an optical system in which the beam is bent in a way to make the optical path much longer than the size of the system. Prismatic binoculars are a well-known example. An early conventional film (35 mm) camera was designed by Tessina that used the concept of folded optics.
Fold mirrors are used to direct infrared light within the optical path of the James Webb Space Telescope. These optical fold mirrors are not to be confused with the observatory's deployable primary mirrors, which are folded inward to fit the telescope within the launch vehicle's payload fairing; when deployed, these segments are part of the three-mirror anastigmat design's primary element and don't serve as fold mirrors in the optical sense.
Source: https://en.wikipedia.org/wiki/Folded_optics
Created with WikipediaReaderReborn (c) WikipediaReader
Video shows what folded optics means. An optical system in which prisms and/or mirrors are used to reduce the overall physical length of the system.. Folded optics Meaning. How to pronounce, definition audio dictionary. How to say folded optics. Powered by MaryTTS, Wiktionary
MIT researchers have developed novel photography optics dubbed “time-folded optics” that capture images based on the timing of reflecting light inside the optics, instead of the traditional approach that relies on the arrangement of optical components. These new principles open doors to new capabilities for time- or depth-sensitive cameras, which are not possible with conventional photography optics.
Video Source: MIT Media Lab
News Source: http://news.mit.edu/2018/novel-optics-ultrafast-cameras-create-new-possibilities-imaging-0813
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#QPT #Camera #Imaging
Folded optics is an optical system in which the beam is bent in a way to make the optical path much longer than the size of the system. Prismaticbinoculars are a well-known example.
An early conventional film (35 mm) camera was designed by Tessina that used the concept of folded optics.
The Ptolemaic dynasty in Ancient Egypt began under the rule of Ptolemy I Soter, whose goal was to make Egypt great again and he did that by putting the country back on solid economic and administrative footing, and it ended with Cleopatra VII. When Alexander the Great of Macedon died unexpectedly in 323 BCE he had amassed an enormous empire spanning from Egypt through Anatolia, Mesopotamia and parts of India. In order to stay away from the influence of the priests and officials at Memphis, Ptolemy I moved the capital from its traditional place at Memphis to Alexandria. Alexandria, a city established by Alexander the Great, grew and flourished under the Ptolemies. The city became more of a Greek city than an Egyptian one, with the port giving easy access to the sea and Greece, and with Greece becoming the language of both commerce and government.
A thing to note about the Ptolemies, although they were Pharaohs of Egypt, they didn’t learn the Egyptian language and pretty much just stayed in Alexandria (which they had made the new capital, moving it from the traditional capital of Memphis). They used Greek for all of their administrative documents, and married within their own family to keep the bloodline pure and also keep their wealth in the family.
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— BUY OUR MERCH —
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— CHAPTERS —
0:00 Introduction
0:51 Lead Up To The Ptolemaic Dynasty
3:50 Egypt During the Ptolemaic Dynasty
7:48 The Ptolemy Family Tree
16:49 Outro
— WANT TO KNOW MORE? —
Ptolemaic Dynasty https://www.worldhistory.org/Ptolemaic_Dynasty/
Ptolemy I https://www.worldhistory.org/Ptolemy_I/
Ptolemy XIII Theos Philopator https://www.worldhistory.org/Ptolemy_XIII_Theos_Philopator/
Arsinoe II Philadelphus https://www.worldhistory.org/Arsinoe_II_Philadelphus/
Cleopatra VII https://www.worldhistory.org/Cleopatra_VII/
The Economy of Ptolemaic Egypt https://www.worldhistory.org/article/1256/the-economy-of-ptolemaic-egypt/
Berenika II Euergetis https://www.worldhistory.org/Berenice_II_Euergetis/
— WATCH NEXT —
Cleopatra VII Philopator: the Last Queen of Ancient Egypt https://www.youtube.com/watch?v=J6bM6ElVO5k
7 Surprising Stories from Herodotus' Histories https://www.youtube.com/watch?v=QRf1jUgXRqQ
Alexander the Great: Life and Reign of the King of the Macedonian Empire https://www.youtube.com/watch?v=_E7JX-rVdFk
The Seven Wonders of the Ancient World: an Overview https://www.youtube.com/watch?v=1YWPMZ6pHm8
Comparing Two Ancient Civilisations: Ancient Egypt vs. Mesopotamia https://www.youtube.com/watch?v=EwY-ziBL1Jw
— ATTRIBUTIONS —
You can find all attribution and credits for images, animations, graphics and music here - https://worldhistory.typehut.com/the-ptolemaic-dynasty-of-ancient-egypt-from-ptolemy-i-to-cleopatra-vii-images-and-attributions-8317
The music used in this recording is the intellectual copyright of Michael Levy, a prolific composer for the recreated lyres of antiquity, and used with the creator's permission. Michael Levy's music is available to stream at all the major digital music platforms. Find out more on:
https://www.ancientlyre.com
https://open.spotify.com/artist/7Dx2vFEg8DmOJ5YCRm4A5v?si=emacIH9CRieFNGXRUyJ9
https://www.youtube.com/channel/UCJ1X6F7lGMEadnNETSzTv8A
— THUMBNAIL IMAGE —
https://www.worldhistory.org/image/15205/family-tree-of-the-ptolemaic-dynasty-of-egypt-305/
Simeon Netchev
CC BY NC SA 4.0 - https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en
https://en.wikipedia.org/wiki/File:Ptolemy_I_as_Pharaoh_of_Egypt.jpg
Stella
CC BY SA 4.0 - https://creativecommons.org/licenses/by-sa/4.0/
World History Encyclopedia
www.worldhistory.org
#ptolemy #ptolemaicdynasty #cleopatravii
Set your mind free. The Last Days of Ptolemy Grey starring Samuel L. Jackson is now streaming on Apple TV+ https://apple.co/_PtolemyGrey
Ptolemy Grey, an ailing man is forgotten by his family, by his friends, and by even himself. Suddenly left without his trusted caretaker and on the brink of sinking even deeper into a lonely dementia, Ptolemy is assigned to the care of orphaned teenager Robyn, played by Dominique Fishback. When they learn about a treatment that can restore Ptolemy’s dementia-addled memories, it begins a journey toward shocking truths about the past, present and future.
Song: “The Fire” by The Roots (feat. John Legend) https://apple.co/TheFire_RootsfeatLegend
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Good lord. This is a giant mess of a family tree. Just... Just watch it and see for yourself.
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Further Reading:
Samuel Sharpe - The History of Egypt under the Ptolemies
C. A. Kincaid - Successors of Alexander the Great
Ian Shaw - The Oxford History of Ancient Egypt
Diodorus Siculus - Library of History
Livius
WorldHistory
Without modern instruments, it was very hard to understand what the planets were, especially since they seemed to wander independently from the stars. Ptolemy provided the definitive answer for the time being. Earth was the centre of the universe and all the heavenly bodies rotated around it.
For inquiry, consider the following:
1. Investigate the work of Aristarchus. What was his model of the universe and why? How did it differ from Ptolemy's?
2. Why is there no gale force wind blowing constantly as the Earth moves about the Sun? What is the cause of wind? How do hurricanes evolve?
3. What was it about the Ptolemaic model that allowed it to last for 1500 years, and what was it that eventually brought about it's demise?
4. Explain why you don't change position in a moving train when you jump up in the air. Why does the train not move out from under you?
5. Use this website as a starting point to do some research and reporting into the great minds that have influenced our understanding of the heavens: https://starchild.gsfc.nasa.gov/docs/StarChild/universe_level2/cosmology.html
6. In Western society, we often hear only about the Greeks and perhaps the Egyptians, with regard to astronomy. Find one major astronomical contribution made by the Chinese, the Indian and at least one First Nation.
How did a Greek become the Pharoh on Egpyt? FIND OUT NOW!
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Featuring Zvezdelina Stankova... Want more?
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The History of Egypt: The Twilight of Egyptian Civilization - The Greek Egypt (Ptolemy and Cleopatra) - Part 5
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