- published: 08 Aug 2018
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An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.
There are three primary types of optical telescope:
A telescope's light gathering power and ability to resolve small detail is directly related to the diameter (or aperture) of its objective (the primary lens or mirror that collects and focuses the light). The larger the objective, the more light the telescope collects and the finer detail it resolves.
People use telescopes and binoculars for activities such as observational astronomy, ornithology, pilotage and reconnaissance, and watching sports or performance arts.
The telescope is more a discovery of optical craftsmen than an invention of a scientist. The lens and the properties of refracting and reflecting light had been known since antiquity and theory on how they worked were developed by ancient Greek philosophers, preserved and expanded on in the medieval Islamic world, and had reached a significantly advanced state by the time of the telescope's invention in early modern Europe. But the most significant step cited in the invention of the telescope was the development of lens manufacture for spectacles, first in Venice and Florence in the thirteenth century, and later in the spectacle making centers in both the Netherlands and Germany. It is in the Netherlands in 1608 where the first recorded optical telescopes (refracting telescopes) appeared. The invention is credited to the spectacle makers Hans Lippershey and Zacharias Janssen in Middelburg, and the instrument-maker and optician Jacob Metius of Alkmaar.
Telescope performance has progressed in many ways since their invention in 1608. The following tables list those steps in performance.
The following is a list of largest single mount optical telescopes sorted by total objective diameter (aperture), including segmented and multi-mirror configurations. It is a historical list with the instruments listed in chronological succession by objective size. Diameter of the primary optics alone can be poor measure of a telescope's historical or scientific significance; for example, William Parsons, 3rd Earl of Rosse's 72-inch (1.8 m) reflecting telescope did not perform as well (i.e. gather as much light) as the smaller silvered glass mirror telescopes that succeeded it because of the poor performance of its speculum metal mirror.
Chronological list of optical telescopes by historical significance, which reflects the overall technological progression and not only the primary mirror's diameter (as shown in table above).
A list is any enumeration of a set of items. List or lists may also refer to:
"Homecoming" is the ninth episode of the first season of the NBC science fiction drama series Heroes.
The episode begins with Claire and her friend Zach walking into the high school amphitheater with lunch as Claire's former cheerleader friends wait anxiously for the results of the Homecoming Court vote. Claire downplays the entire ritual, but Zach encourages her to check the posting and see if she had won. To Claire's surprise, she has been voted Homecoming Queen, with her main rival, Jackie, merely a member of the court. Astonished, Claire and the rest of the cheerleaders turn around to see much of the student body proclaiming congratulations and support for Claire. She later discovers that Zach had been campaigning for her, working to win the "unpopular vote" by letting everyone know that Claire is not like the popular Jackie. Jackie, however, spoils the moment in an attempt to deflate Claire's victory by poking fun at Zach. Claire, beginning to see the importance of Zach's friendship to her, promptly punches Jackie in the face.
The angle of list is the degree to which a vessel heels (leans, or tilts) to either port or starboard.
A listing vessel is stable and at equilibrium, but the distribution of weight aboard (often caused by uneven loading or flooding) causes it to heel to one side.
By contrast roll is the dynamic movement from side to side caused by waves.
If a listing ship goes beyond the point where a righting moment will keep it afloat, it will capsize and potentially sink.
Optical 88 (Chinese: 眼鏡88) is one of the famous eyewear stores in Hong Kong. It was established in 1984, as a member of Stelux Group of Companies, who owns largest professional optical retail network in Hong Kong.
Optical 88's headquarters is located in Hong Kong (dispersed all over Hong Kong Island, Kowloon and the New Territories) while overseas stores are located at various countries and cities including Macau, Guangzhou, Singapore, Thailand and Malaysia etc.
Optical 88's key products are eyeglasses, including sunglasses and the frames and lenses of these glasses. They mainly provide customers eyeglasses-making services and Eye examination services.
A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first known practical telescopes were invented in the Netherlands at the beginning of the 17th century, using glass lenses. They found use in terrestrial applications and astronomy.
Within a few decades, the reflecting telescope was invented, which used mirrors. In the 20th century many new types of telescopes were invented, including radio telescopes in the 1930s and infrared telescopes in the 1960s. The word telescope now refers to a wide range of instruments detecting different regions of the electromagnetic spectrum, and in some cases other types of detectors.
The word "telescope" (from the Ancient Greek τῆλε, tele "far" and σκοπεῖν, skopein "to look or see"; τηλεσκόπος, teleskopos "far-seeing") was coined in 1611 by the Greek mathematician Giovanni Demisiani for one of Galileo Galilei's instruments presented at a banquet at the Accademia dei Lincei. In the Starry Messenger, Galileo had used the term "perspicillum".
The World's Biggest Optical Telescope, the Extremely Large Telescope is a 39.3 meter behemoth. But will Starlink ruin it? https://www.youtube.com/watch?v=soTqc1Y_qU8&list=PLrAnGxL8nxOHR01diTRdgqhUto6Jqxgx9&index=1 When completed in 2024, it will be the largest optical and infrared telescope in the world. #telescopes #elt #extremelylargetelescope 🔴 Subscribe to my channel: https://youtube.com/christianready?sub_confirmation=1 🔴 Share this video with a friend: https://youtu.be/fvjhldjESGo 🔴 From out of town? Translate this video! http://www.youtube.com/timedtext_video?ref=share&v=fvjhldjESGo 🔴 Learn more about ELT: https://www.eso.org/public/teles-instr/elt/elt_rev/ 🔴 More giant telescope videos: https://www.youtube.com/playlist?list=PLrAnGxL8nxOHR01diTRdgqhUto6Jqxgx9 -~-~~-~~~-~~-~- ...
Visit https://www.optcorp.com/ for all of your astronomy product and knowledge needs. In this video, OPT's Ian Lauer gives you a rundown on the basic telescope types. He discusses the benefits and considerations of the three basic telescope types (reflector, refractor, and catadioptric) so that you can make the best possible choice for your astronomy needs. Music: Namaste by Audionautix is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://audionautix.com/ ===== OPT - The Telescope Authority since 1947 Telescope equipment? Astrophotography gear? Professional Astronomy? We help with it all. Check us out at www.optcorp.com ===== Let's get social! Instagram: https://www.instagram.com/optcorp Facebook: https://www.facebook.co...
The beginning of modern astronomy is often linked to Galileo building his first telescope in 1609 — roughly 400 years ago! While he was not the first person to use a telescope, Galileo made many fascinating discoveries, ultimately revealing that the Earth orbits the sun. This video showcases the Zenith Telescope, built by Troughton & Simms in London, England circa 1872. Surveyors used this telescope to mark the boundary between Canada and the United States along the 49th parallel in western Canada. To learn more about telescopes, visit the Canada Science and Technology Museum. http://www.sciencetech.technomuses.ca/
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Today Phil explains how telescopes work and offers up some astronomical shopping advice. Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/products/crashcourse-astronomy-poster -- Chapters: Introduction 00:00 How do Telescopes Work? 0:47 Refraction 2:50 Magnification 3:48 Resolution 4:28 Reflectors 5:19 What Kind of Telescope Should You Buy? 6:19 Technology and the Light Spectrum 7:45 Review 11:14 -- Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse -- PBS Digital Studios: http://youtube.com/pbsdigitalstudios Follow Phil on Twitter: https://twitter.com/badastronomer Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash...
This is a physics video for Grade 10 and above students about Telescope, its principle and its working.
In this channel of YouTube are edited videos for high school students as well as for students of physics, chemistry, biology, medicine, pharmacy, agriculture and all branches studying science of physics.
Greg Foot explains the inner workings of a telescope. Science has come a long way since the first two lens prototype invented back in 1608. Subscribe for more awesome science: http://bit.ly/SubscribeToEarthLab 1 http://www.space.com/21950-who-invented-the-telescope.html 2 http://astro.uchicago.edu/vtour/inside/stats.html 3 http://www.gtc.iac.es/gtc/gtc.php 4 http://www.space.com/22505-worlds-largest-telescopes-explained-infographic.html 5 https://www.nasa.gov/mission_pages/hubble/story/index.html 6 http://www.spitzer.caltech.edu/mission 7 https://kepler.nasa.gov/Mission/faq/#a4 Welcome to BBC Earth Science! We answer all your curious questions about science in the world around you. If you have a question let us know in the comments on any of our videos and it could be answered by one of ...
🔔https://bit.ly/subskrybuj_Bednarka - subskrybuj mój kanał i bądź na bieżąco z moją twórczością. Dzięki za wsparcie! 🎧https://bit.ly/Bednarek_Wszystkie_Utwory - posłuchaj wszystkich moich utworów. Tekst: Henryk Bednarek Muzyka: Henryk Bednarek Produkcja: Space Records Mateusz Posyniak / 537 857 111 email: [email protected] Utwór "List" wyróżnia się wśród pozostałych na płycie, ponieważ nie jest zbiorem wspomnień Kamila, a piosenką, którą jego ojciec napisał dla mamy kiedy byli bardzo młodzi. Prezentujemy czwarty po "Chwile jak te", "Sailing" i "Euforia" obrazek do utworu z płyty "Oddycham" wydanej 29 maja 2015 Posłuchaj utworu w serwisie cyfrowym: https://independentdigital.lnk.to/oddycham Produkcja klipu: IMAGE PRO (http://www.imagepro.pl/) Scenariusz: Michał Braum i Grzegor...
Vlad and Niki are getting ready for Christmas. The kids and their mom dress up for Christmas, ride the snow slides, bake Christmas cookies, make snow figurines and play snowballs, decorate the Christmas tree and open the presents.
The CEO of South Korean airline Jeju Air apologized to the victims of the plane crash at South Korea's Muan International Airport that has killed at least 124 people on Sunday (December 29). In a short media briefing, CEO Kim E-bae said the cause of the crash was still unknown, that the aircraft had no record of accidents and there were no early signs of malfunction. The airline will cooperate with investigators and make supporting the bereaved its top priority, Kim said. Jeju Air flight 7C2216, arriving from the Thai capital Bangkok with 181 people on board, was attempting to land shortly after 9 a.m. (0000 GMT) at the airport in the south of the country when the incident occurred, South Korea's transport ministry said. (Production: Minwoo Park) For more ABS-CBN News videos, click the li...
♫ Przeczytaj opis! 💲 Wesprzyj kanał donejtami: https://tipply.pl/u/arekkopaczewski ✔ Wesprzyj kanał przez zrzutkę: https://zrzutka.pl/v93e2y "List" z repertuaru Kamila Bednarka w moim wykonaniu. Mam nadzieję, że mój cover przypadnie Wam do gustu. ► KONCERTY: tel. +48 690 576 666 ► WESELA: tel.: +48 785 922 546 ► FACEBOOK: facebook.com/ArekKopaczewskiMusic ► INSTAGRAM: @arekkopaczewski ► E-MAIL: [email protected] MP3 do pobrania: https://drive.google.com/file/d/1voQTznvO5dprxBsDgOKgskr89WNM9frT/view?usp=sharing ______________________________________________________________________________________________ Chcesz aby Arek Kopaczewski razem ze swoim zespołem coverowym OPTIMA zagrał, zaśpiewał i poprowadził przez całą noc Twoje wesele lub inną imprezę? Wejdź na: ► www.facebook.com/zesp...
Simone Lamsma (violin) - Davida Scheffers (cor anglais) Watch til the end, emotion guaranteed... Davida Scheffers has lived her dream in winning a contest and the opportunity to play with the dutch Orchestra. Davida suffers from an extremely painful neuromuscular condition that derailed her career, and she thought she would never get to play in a professional orchestra again... The young blond lady is her daughter and was 18 years old that day. - All racist or offensive comments will be reported and deleted. - Video from RTL Netherlands show. https://www.rtl.nl/ - Special thanks to RTL NL for not blocking this video for copyrighting, masterpiece of human feelings representation through music. It had to be shared...
Album do nabycia: http://kulturalnysklep.pl/EG/pr/-ekg--edyta-gorniak.html Subskrybuj i oglądaj więcej: http://www.youtube.com/user/KulturalnaStrefa?sub_confirmation=1
See us on tour : https://linktr.ee/moonchildtour Buy the sheet music: https://linktr.ee/moonchildmerch Stream on Spotify ➔https://goo.gl/NLt2op CD/Digital/Vinyl ➔ https://goo.gl/lqcVr9 Credits: Produced by Moonchild (Moonchild is Amber Navran, Andris Mattson, and Max Bryk) Starring: Maasai Godwin & Connor Foster Director: Evan Colten Director of Photography: Jack Alexander Jr. Producer: Robert Upchurch, Evan Colten 1st Asst. Director: Max Cunningham Sound Designer: Galen McCaw Production Designer: Isabelle Smith Dance Choreographer: Cristina McKeever Colorist: Gabe Sanchez Special thanks to Antelope Acres Market for letting us film in their store!
Muzyka: Jacek Chrzanowski Słowa: Katarzyna Nosowska Jedyny mój To zaledwie kilka dni A ja nie mieszczę łez Zagryzam wargi Dotykam się Jak to zwykłeś robić Ty Wyczuwam, wyczuwam Cię W zapachu ubrań A niebo znów Na głowę spada mi I nadziei coraz mniej Na słońce Tak trudno jest Zasypiać, budzić się Gdy imię Twoje echem Odbija się od ścian A te dni ciszy Które, które dzielą nas Podpowiadają mi złe obrazy Muszę to przespać Przeczekać, przeczekać trzeba mi A jutro znowu pójdziemy nad rzekę Jedyny mój Pora kończyć już Pielęgnuj obraz mój W swym sercu Jestem wodą Do której raz włożywszy dłoń Nigdy nie zdołasz jej Zapomnieć.. A te dni ciszy Które, które dzielą nas Podpowiadają mi złe obrazy Muszę to przespać Przeczekać, przeczekać trzeba mi A jutro znowu pójdziemy nad rzekę
To już naprawdę ostatni utwór promujący serial Rojst. Zamykająca trylogię trzecia część „Rojst Millenium” już 28 lutego. Tylko w Netflix. 🎶POSŁUCHAJ UTWORU W SERWISACH STREAMINGOWYCH ➡️ https://kayaxmusic.lnk.to/ListRojstMillenium Tekst oryginału: Katarzyna Nosowska Muzyka oryginału: Jacek Chrzanowski Wokal: Brodka, Jann Produkcja muzyczna: Urbanski Piano, celesta: Patryk Kraśniewski Saksofon barytonowy: Jakub Łępa Mix/Master: Wojciech Perczyński Reżyser: Mac Adamczak Operator obrazu: Kuba Stoszek Asystent reżysera: Michał Marzec Klient: Netflix Agencja: albo albo Dom Produkcyjny: Papaya Films Postprodukcja: Vein Postproduction Produkcja Audio: Głośno Cast: Brodka Jann Andrzej Seweryn Dawid Ogrodnik Magdalena Różczka Łukasz Simlat Vanessa Aleksander Filip Pławiak Mi...
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Provided to YouTube by Sony Music Entertainment List · Livka · Igor Herbut List ℗ 2024 Sony Music Entertainment Poland Sp. z o.o. Released on: 2024-04-26 Associated Performer: Livka, Igor Herbut Composer, Lyricist: Oliwia Kiszczak Composer, Producer: Paweł Odoszewski Auto-generated by YouTube.
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.
There are three primary types of optical telescope:
A telescope's light gathering power and ability to resolve small detail is directly related to the diameter (or aperture) of its objective (the primary lens or mirror that collects and focuses the light). The larger the objective, the more light the telescope collects and the finer detail it resolves.
People use telescopes and binoculars for activities such as observational astronomy, ornithology, pilotage and reconnaissance, and watching sports or performance arts.
The telescope is more a discovery of optical craftsmen than an invention of a scientist. The lens and the properties of refracting and reflecting light had been known since antiquity and theory on how they worked were developed by ancient Greek philosophers, preserved and expanded on in the medieval Islamic world, and had reached a significantly advanced state by the time of the telescope's invention in early modern Europe. But the most significant step cited in the invention of the telescope was the development of lens manufacture for spectacles, first in Venice and Florence in the thirteenth century, and later in the spectacle making centers in both the Netherlands and Germany. It is in the Netherlands in 1608 where the first recorded optical telescopes (refracting telescopes) appeared. The invention is credited to the spectacle makers Hans Lippershey and Zacharias Janssen in Middelburg, and the instrument-maker and optician Jacob Metius of Alkmaar.