'+pages+''); $('.stream > div:odd').addClass('bgr_color'); updateHeight('#history'); }); window.activateTabArea = ensure(function(tab, areas){ var parsed = false; var parts = (areas || '').split('/'); window.fsonload = $.inArray('fs', parts) >= 0; if(fsonload){ parts.splice(parts.indexOf('fs'), 1); } var replayMode = false; if($.inArray('replay', parts)>=0){ replayMode = 'replay'; } var noSoundMode = false; if($.inArray('nosound', parts)>=0){ noSoundMode = 'nosound'; } if($.inArray('ns', parts)>=0){ noSoundMode = 'ns'; } var previewMode = null; if($.inArray('p', parts)>=0){ previewMode = 'p'; } if($.inArray('preview', parts)>=0){ previewMode = 'preview'; } if($.inArray('repeat', parts)>=0){ replayMode = 'repeat'; } if($.inArray('r', parts)>=0 || $.inArray('ro', parts)>=0){ replayMode = 'r'; } if(replayMode){ parts.splice(parts.indexOf(replayMode), 1); } if(noSoundMode){ parts.splice(parts.indexOf(noSoundMode), 1); } if(previewMode){ parts.splice(parts.indexOf(previewMode), 1); } if(previewMode){ if(!parts.length){ parts = ['1-14', '999:59']; } } var area = parts[0]; if(tab == 'history' && false){ var page = parseInt(area || '1') || 1; $.ajax({ url: 'https://login.wn.com/recent/json/?pp='+history_pp+'&skip='+history_pp*(page-1), dataType: 'jsonp', success: function(response){ $ensure(function(){ renderHistory(response, page); }); } }); return true; } if(tab == 'global_history' && false){ var page = parseInt(area || '1') || 1; globalHistory.fetchStream(page, '', function(){ updateHeight('#global_history'); }); return true; } if(tab == 'my_playlists' && false){ var page = parseInt(area || '1') || 1; myPlaylists.fetchStream(page, '', function(){ updateHeight('#my_playlists'); }); return true; } if(tab == 'my_videos' && false){ var page = parseInt(area || '1') || 1; myVideos.fetchStream(page, '', function(){ updateHeight('#my_videos'); }); return true; } if(tab == 'related_sites' && areas && matchPosition(areas)){ var seconds = parsePosition(areas); scrollRelated(seconds); return false; } if(matchPosition(area) || matchAction(area)){ parts.unshift('1'); area = parts[0]; } if(tab == 'expand' && area && area.match(/\d+/)) { var num = parseInt(area); if(num < 100){ //FIX ME. 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Spacetime

In physics, spacetime is any mathematical model that combines space and time into a single interwoven continuum. The spacetime of our universe has historically been interpreted from a Euclidean space perspective, which regards space as consisting of three dimensions, and time as consisting of one dimension, the "fourth dimension". By combining space and time into a single manifold called Minkowski space, physicists have significantly simplified a large number of physical theories, as well as described in a more uniform way the workings of the universe at both the supergalactic and subatomic levels.

Explanation

In non-relativistic classical mechanics, the use of Euclidean space instead of spacetime is appropriate, because time is treated as universal with a constant rate of passage that is independent of the state of motion of an observer. In relativistic contexts, time cannot be separated from the three dimensions of space, because the observed rate at which time passes for an object depends on the object's velocity relative to the observer and also on the strength of gravitational fields, which can slow the passage of time for an object as seen by an observer outside the field.

Jezebel

Jezebel (/ˈdʒɛzəbəl/,Hebrew: אִיזֶבֶל / אִיזָבֶל, Modern Izével / Izável Tiberian ʾÎzéḇel / ʾÎzāḇel) (fl. 9th century BCE) was a princess, identified in the Hebrew Book of Kings (1 Kings 16:31) as the daughter of Ethbaal, King of Sidon (Lebanon/Phoenicia) and the wife of Ahab, king of northern Israel.

According to the Hebrew Bible, Jezebel incited her husband King Ahab to abandon the worship of Yahweh and encourage worship of the deities Baal and Asherah instead. Jezebel persecuted the prophets of Yahweh, and fabricated evidence of blasphemy against an innocent landowner who refused to sell his property to King Ahab, causing the landowner to be put to death. For these transgressions against the God and people of Israel, Jezebel met a gruesome death - thrown out of a window by members of her own court retinue, and the flesh of her corpse eaten by stray dogs.

Jezebel became associated with false prophets. In some interpretations, her dressing in finery and putting on makeup led to the association of the use of cosmetics with "painted women" or prostitutes.

Jezebel (website)

Jezebel is a feminist blog, under the tagline "Celebrity, Sex, Fashion for Women. Without Airbrushing." It is one of several blogs owned by Gawker Media.

History

Jezebel was launched on May 21, 2007, as the 14th Gawker blog. According to founding editor Anna Holmes, the site stemmed from the desire to better serve Gawker.com's female readers, who made up 70% of the site's readership at the time. The Jezebel manifesto states that the site "will attempt to take all the essentially meaningless but sweet stuff directed our way and give it a little more meaning, while taking more the serious stuff and making it more fun, or more personal, or at the very least the subject of our highly sophisticated brand of sex joke. Basically, we wanted to make the sort of women's magazine we'd want to read." One of the site's guiding principles, according to Holmes, is to avoid saying "misogynist things about women's weight."

At Jezebel's launch, the editorial staff included Holmes, who previously worked at Star and InStyle; editor Moe Tkacik, a former Wall Street Journal reporter; and associate editor Jennifer Gerson, a former assistant to Elle editor-in-chief Roberta Myers. Gerson left the site in May 2008 to become the Women's Editor for the Polo Ralph Lauren website; Tkacik departed in August 2008 to work at Gawker.com, after briefly accepting and then rescinding a job offer from Radar. Tkacik was subsequently laid off in a company-wide restructuring the following October. Holmes left the site in June 2010; Jessica Coen replaced her as editor-in-chief. Other current staffers include Madeleine Davies, Kelly Faircloth, Hillary Crosley, Kate Dries and Callie Beusman.

Jezebel (film)

Jezebel is a 1938 American romantic drama film released and directed by William Wyler. It stars Bette Davis and Henry Fonda, supported by George Brent, Margaret Lindsay, Donald Crisp, Richard Cromwell, and Fay Bainter. The film was adapted by Clements Ripley, Abem Finkel, John Huston and Robert Buckner, from the play by Owen Davis, Sr.

The film tells the story of a headstrong young Southern woman during the Antebellum period whose actions cost her the man she loves.

The film is based on a 1933 stageplay starring Miriam Hopkins. Tallulah Bankhead was originally slated for the role but fell severely ill during rehearsals.

Plot

In 1852 New Orleans, spoiled, strong-willed belle Julie Marsden (Bette Davis) is engaged to banker Preston "Pres" Dillard (Henry Fonda). In retaliation for Pres refusing to drop his work and accompany her while she shops for a dress, she orders a brazen red one for the most important ball of the year, one where white dresses for unmarried women are expected. All of Julie's friends are shocked, but no one can convince her to give up her whim.

Podcasts:

Jezebel

Jezebel

ALBUMS

Jezebel

Jezebel

ALBUMS

  • What Exactly is Spacetime? Explained in Ridiculously Simple Words

    Spacetime, as a concept, is related to a space that consists of 4 dimensions instead of the regular 3-dimensional space. As early as 1905, Einstein proposed a now widely popular theory that the speed of light is independent of the motion of all observers, and that space and time are interconnected in a single continuum. This theory, which is now a cornerstone of modern and quantum physics, is known as Einstein’s special theory of relativity. Einstein's proposed idea of a single continuum where space and time are interwoven is what people call “space-time”. According to this theory, time—which has traditionally been considered an independent entity according to the principles of classical physics—is affected when a body moves through space. This happens because, according to the theory, tim...

    published: 04 Oct 2021
  • What if we could see Spacetime? An immersive experience

    A visual and musical journey to the edge of our universe, visualizing the fabric of space-time in order to study its dynamics and different forms... 0:00 - Galaxies 2:05 - Big Bang 3:20 - The Earth 6:35 - Black hole 9:10 - Rotating black hole 10:37 - Gravitational waves You can listen to the soundtrack on SoundCloud : https://soundcloud.com/aroussel/sets/voyage-a-travers-lespace-temps This video is narrated by Octave Masson. For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN And if you liked this video, you can share it on social networks ! To support me on Patreon : http://www.patreon.com/ScienceClic or on Tipeee : http://tipeee.com/ScienceClic Facebook Page : http://facebook.com/ScienceClic Twitter : http://twitter.com/ScienceClic Instagram : h...

    published: 04 Mar 2024
  • Space-Time: The Biggest Problem in Physics

    What is the deepest level of reality? In this Quanta explainer, Vijay Balasubramanian, a physicist at the University of Pennsylvania, takes us on a journey through space-time to investigate what it’s made of, why it’s failing us, and where physics can go next. Explore black holes, holograms, “alien algebra,” and more space-time geometry: https://www.quantamagazine.org/the-unraveling-of-space-time-20240925/ 00:00 - The Planck length, an intro to space-time 1:23 - Descartes and Newton investigate space and time 2:04 - Einstein's special relativity 2:32 - The geometry of space-time and the manifold 3:16 - Einstein's general relativity: space-time in four dimensions 3:35 - The mathematical curvature of space-time 4:57 - Einstein's field equation 6:04 - Singularities: where general relativit...

    published: 25 Sep 2024
  • The fundamentals of space-time: Part 1 - Andrew Pontzen and Tom Whyntie

    View full lesson: http://ed.ted.com/lessons/the-fundamentals-of-space-time-part-1-andrew-pontzen-and-tom-whyntie Space is where things happen. Time is when things happen. And sometimes, in order to really look at the universe, you need to take those two concepts and mash them together. In this first lesson of a three-part series on space-time, hilarious hosts Andrew Pontzen and Tom Whyntie go through the basics of space and time individually, and use a flip book to illustrate how we can begin to look at them together. Lesson by Andrew Pontzen and Tom Whyntie, animation by Giant Animation Studios.

    published: 24 Mar 2014
  • How Can SPACE and TIME be part of the SAME THING?

    Go to https://brilliant.org/ArvinAsh to get a 30-day free trial + the first 200 people will get 20% off their annual subscription. Be sure to check out the course called "Special Relativity" to get a deeper understanding of the concepts discussed in this video. TALK TO ME on Patreon: https://www.patreon.com/arvinash REFERENCES Visualizing 4D spacetime (Arvin Ash): https://youtu.be/ZfR1Jc6Zglo Minkowski spacetime calculations: https://tinyurl.com/2bft4pw6 What is spacetime article: https://tinyurl.com/23mzynkj Paul Ehrenfest paper on more than 3 dimensions: https://tinyurl.com/27jma7j6 Why we are stuck with 3 dimensions: https://tinyurl.com/23oseuup Sean Carroll video on spacetime: https://tinyurl.com/27srn5ez CHAPTERS 0:00 The most important concept in Physics? 2:00 Defining spacetim...

    published: 19 Aug 2023
  • Can Space Time Remember?

    Go to https://www.buyraycon.com/spacetime for up to 30% off your order, plus free shipping! Brought to you by Raycon. There are cosmic events so powerful that they leave permanent marks on the fabric of the universe itself. Imagine two colossal black holes spiraling into each other, yes they send ripples in the fabric of spacetime—gravitational waves that we’ve only recently learned to sense. Ripples pass, leaving the pond … or the universe … unchanged when they’re gone. But ripples aren’t the only type of wave. There’s another type of wave that leaves a permanent mark—a memory etched in the fabric of the universe. They’re akin to gravitational tsunamis, and we’re on the verge of being able to detect them. Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.co...

    published: 14 Nov 2024
  • How does the curvature of spacetime create gravity?

    In 1919, Arthur Eddington led an expedition to observe a total solar eclipse, confirming that light passing near the Sun is deflected due to its gravity. This observation supported Einstein's theory of general relativity, which differs from Newton's laws by predicting that massive objects warp spacetime, affecting the path of light. Einstein resolved a paradox wherein photons traveling different distances (AB vs. CD) near a massive object like the Sun reach their destination simultaneously. According to special relativity, light's speed is constant, so photons traveling a shorter path (CD) should take less time. However, in general relativity, the presence of a massive object causes time to slow down, an effect called gravitational time dilation. To visualize this, imagine spacetime as a...

    published: 15 Jun 2024
  • What If The Universe DID NOT Start With The Big Bang?

    👉 Head to https://brilliant.org/spacetime/ for a 30-day free trial + 20% off your annual subscription Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Here’s the story we like to tell about the beginning of the universe. Space is expanding evenly everywhere, but if you rewind that expansion you find that all of space was once compacted in an infinitesimal point of infinite density—the singularity at the beginning of time. The expansion of the universe from this point is called the Big Bang. We like to tell this story because it's the correct conclusion from the description of an expanding universe that followed Einstein's general theory of relativity back in the 19-teens. But since then we've learned so much more since then. Does our modern understanding of the un...

    published: 26 Sep 2024
  • Time Travel: Exploring Paradoxes, Possibilities, and Scientific Frontiers #timeTravel #spaceTime

    Time travel has fascinated humanity for generations, intertwining scientific theories and imaginative storytelling. From Einstein's groundbreaking theory of relativity to the speculative concept of wormholes, this captivating topic invites questions about the nature of time and our place within it. Einstein's theory of relativity introduced the idea that time is not a fixed constant but a flexible dimension interconnected with space, forming what we know as space-time. This revolutionary concept suggests that under certain conditions, such as traveling at nearly the speed of light or being near massive objects, time can stretch or contract. This phenomenon, known as time dilation, offers a theoretical foundation for moving through time, albeit with practical limitations that challenge our...

    published: 09 Dec 2024
  • Neil deGrasse Tyson Explains the Space-time Continuum

    What are the consequences of playing with the SPACE-TIME CONTINUUM? On this explainer, Neil deGrasse Tyson and comic co-host Chuck Nice break down the space-time continuum in real life and in pop culture. Find out about Einstein's special theory of relativity and our four dimensions. Neil and Chuck make lunch plans as they navigate space and time. What critiques does Neil have of The Terminator and Back to the Future? What are some unintended complications of time travel? Discover the concept of worldliness, getting unstuck from time in Slaughterhouse 5, and how time travel is just a changing of dimensions. About the prints that flank Neil in this video: "Black Swan” & "White Swan" limited edition serigraph prints by Coast Salish artist Jane Kwatleematt Marston. For more information ab...

    published: 29 Jun 2021
What Exactly is Spacetime? Explained in Ridiculously Simple Words
4:56

What Exactly is Spacetime? Explained in Ridiculously Simple Words

  • Order:
  • Duration: 4:56
  • Uploaded Date: 04 Oct 2021
  • views: 319108
Spacetime, as a concept, is related to a space that consists of 4 dimensions instead of the regular 3-dimensional space. As early as 1905, Einstein proposed a now widely popular theory that the speed of light is independent of the motion of all observers, and that space and time are interconnected in a single continuum. This theory, which is now a cornerstone of modern and quantum physics, is known as Einstein’s special theory of relativity. Einstein's proposed idea of a single continuum where space and time are interwoven is what people call “space-time”. According to this theory, time—which has traditionally been considered an independent entity according to the principles of classical physics—is affected when a body moves through space. This happens because, according to the theory, time and space are connected and part of a single continuum—spacetime. In this video, we discuss spacetime in absolutely simple words: what exactly is spacetime and how is it related to the force of gravitation and Einstein’s theory of relativity? #science #animation #spacetime References: https://asd.gsfc.nasa.gov/blueshift/index.php/2015/11/25/100-years-of-general-relativity/ https://sci.esa.int/web/lisa-pathfinder/-/56434-spacetime-curvature https://sites.pitt.edu/~jdnorton/teaching/HPS_0410/chapters/Special_relativity_rel_sim/index.html If you wish to buy/license this video, please write to us at admin@scienceabc.com. Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood ) SUBSCRIBE to get more such science videos! https://www.youtube.com/channel/UCcN3IuIAR6Fn74FWMQf6lFA?sub_confirmation=1 Follow us on Twitter! https://twitter.com/abc_science Follow us on Facebook! https://facebook.com/sciabc Follow our Website! https://www.scienceabc.com
https://wn.com/What_Exactly_Is_Spacetime_Explained_In_Ridiculously_Simple_Words
What if we could see Spacetime? An immersive experience
12:10

What if we could see Spacetime? An immersive experience

  • Order:
  • Duration: 12:10
  • Uploaded Date: 04 Mar 2024
  • views: 2942825
A visual and musical journey to the edge of our universe, visualizing the fabric of space-time in order to study its dynamics and different forms... 0:00 - Galaxies 2:05 - Big Bang 3:20 - The Earth 6:35 - Black hole 9:10 - Rotating black hole 10:37 - Gravitational waves You can listen to the soundtrack on SoundCloud : https://soundcloud.com/aroussel/sets/voyage-a-travers-lespace-temps This video is narrated by Octave Masson. For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN And if you liked this video, you can share it on social networks ! To support me on Patreon : http://www.patreon.com/ScienceClic or on Tipeee : http://tipeee.com/ScienceClic Facebook Page : http://facebook.com/ScienceClic Twitter : http://twitter.com/ScienceClic Instagram : http://instagram.com/ScienceClic Alessandro Roussel, For more info: http://www.alessandroroussel.com/en _________________________________________________ ScienceClic Français : http://youtube.com/ScienceClic ScienceClic Español : http://youtube.com/ScienceClicES _________________________________________________
https://wn.com/What_If_We_Could_See_Spacetime_An_Immersive_Experience
Space-Time: The Biggest Problem in Physics
19:42

Space-Time: The Biggest Problem in Physics

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  • Duration: 19:42
  • Uploaded Date: 25 Sep 2024
  • views: 565468
What is the deepest level of reality? In this Quanta explainer, Vijay Balasubramanian, a physicist at the University of Pennsylvania, takes us on a journey through space-time to investigate what it’s made of, why it’s failing us, and where physics can go next. Explore black holes, holograms, “alien algebra,” and more space-time geometry: https://www.quantamagazine.org/the-unraveling-of-space-time-20240925/ 00:00 - The Planck length, an intro to space-time 1:23 - Descartes and Newton investigate space and time 2:04 - Einstein's special relativity 2:32 - The geometry of space-time and the manifold 3:16 - Einstein's general relativity: space-time in four dimensions 3:35 - The mathematical curvature of space-time 4:57 - Einstein's field equation 6:04 - Singularities: where general relativity fails 6:50 - Quantum mechanics (amplitudes, entanglement, Schrödinger equation) 8:32 - The problem of quantum gravity 9:38 - Applying quantum mechanics to our manifold 10:36 - Why particle accelerators can't test quantum gravity 11:28 - Is there something deeper than space-time? 11:45 - Hawking and Bekenstein discover black holes have entropy 13:54 - The holographic principle 14:49 - AdS/CFT duality 16:06 - Space-time may emerge from entanglement 17:44 - The path to quantum gravity -------- - VISIT our website: https://www.quantamagazine.org - LIKE us on Facebook: / quantanews - FOLLOW us Twitter: / quantamagazine Quanta Magazine is an editorially independent publication supported by the Simons Foundation: https://www.simonsfoundation.org
https://wn.com/Space_Time_The_Biggest_Problem_In_Physics
The fundamentals of space-time: Part 1 - Andrew Pontzen and Tom Whyntie
5:06

The fundamentals of space-time: Part 1 - Andrew Pontzen and Tom Whyntie

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  • Uploaded Date: 24 Mar 2014
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View full lesson: http://ed.ted.com/lessons/the-fundamentals-of-space-time-part-1-andrew-pontzen-and-tom-whyntie Space is where things happen. Time is when things happen. And sometimes, in order to really look at the universe, you need to take those two concepts and mash them together. In this first lesson of a three-part series on space-time, hilarious hosts Andrew Pontzen and Tom Whyntie go through the basics of space and time individually, and use a flip book to illustrate how we can begin to look at them together. Lesson by Andrew Pontzen and Tom Whyntie, animation by Giant Animation Studios.
https://wn.com/The_Fundamentals_Of_Space_Time_Part_1_Andrew_Pontzen_And_Tom_Whyntie
How Can SPACE and TIME be part of the SAME THING?
15:46

How Can SPACE and TIME be part of the SAME THING?

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  • Uploaded Date: 19 Aug 2023
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Go to https://brilliant.org/ArvinAsh to get a 30-day free trial + the first 200 people will get 20% off their annual subscription. Be sure to check out the course called "Special Relativity" to get a deeper understanding of the concepts discussed in this video. TALK TO ME on Patreon: https://www.patreon.com/arvinash REFERENCES Visualizing 4D spacetime (Arvin Ash): https://youtu.be/ZfR1Jc6Zglo Minkowski spacetime calculations: https://tinyurl.com/2bft4pw6 What is spacetime article: https://tinyurl.com/23mzynkj Paul Ehrenfest paper on more than 3 dimensions: https://tinyurl.com/27jma7j6 Why we are stuck with 3 dimensions: https://tinyurl.com/23oseuup Sean Carroll video on spacetime: https://tinyurl.com/27srn5ez CHAPTERS 0:00 The most important concept in Physics? 2:00 Defining spacetime 3:15 The math of space vs math of spacetime 7:41 Let's answer your questions 8:41 How the heck can you add time and space in the formula? 10:12 The implications of combining space and time 11:10 Why not more than 3 spatial and 1 time dimension? 13:27 How to learn spacetime more deeply SUMMARY What is Spacetime? Are space and time the same thing? Space was thought to be nothing, an empty void with no matter in it. In 1908, Hermann Minkowski postulated that time could be thought of as a 4th dimension along with the three dimensions of space. Einstein later showed that this spacetime is a kind of geometry that can bend, affecting the trajectory and passage of time for objects. How can space and time be part of the same canvas? Space is measured in meters, while time is measured in seconds. How are the two interchangeable? The definition of spacetime is the set of points in space and time, located with 4 numbers. This would be the location in 3 dimensional space and a time. You can also call these events. In ordinary Euclidean space, the distance between two point A and B is fairly simple to figure out. The straight line between them is the shortest path. And it’s obvious also that any other path, from A to B will be longer. If we change one of the coordinates to time, the math that we need is not based on Euclidean geometry, but Minkowskian geometry (or Minkowski Geometry). The straight line between A and B does not represent distance but time elapsed between two events. A straight line represents traveling at a constant velocity between the two events, and is the MAXIMUM duration. So for example, in spacetime, if you took a curved path from event A to event B, or a zig zag path, then the elapsed time would be lower compared to the straight line between A and B, because you will have traveled more in space than in time. Einstein showed that there is no such thing as absolute time, and so that’s why we have a new formulation. But how do you add time and distance together, since the units are completely different? The key is that there in important conversion factor between time and space, that allows us to convert one to the other. And that conversion factor is, the maximum speed limit of the universe, that is, as far as we know, is the speed of light. The speed of light is the key to uniting space and time. We call this maximum speed “c” in physics. And c is 299,792,458 meters per second. As you know speed is distance over time. If we multiply this speed by time, we get a distance. So now we can convert time in the same equation to distance – distance = c*t. Thus, the equation works by using this conversion factor. This formulation for a 2 dimensional spacetime can be extended to the real 4 dimensional spacetime we live in. And that 4 dimensional geometry is the foundation for understanding General Relativity, with the addition that this spacetime is no longer flat, but can curve and contort. So the math gets complicated in General Relativity. The consequence of a curving spacetime is that this results in gravity. Why do we have only 3 dimensions, why not more? And why not more than one time dimension? First, large spatial dimensions probably don’t exist because we would have detected them if they did. And more than one dimension of time could result in closed time-like loops, in other words it would allow travel to the past. This is considered an impossibility because it would break causality. More than 3 spatial dimensions would also likely have fatal consequences. In 1920 Paul Ehrenfest showed that our orbit around the sun would be impossible if we had an additional spatial dimension. Other problems have also been identified, for example the orbit of the electron in atoms would become unstable. #spacetime If we had fewer spatial dimensions, then spacetime would be too simple for life. For example if we had only one spatial dimension, then orbits could not form. Two dimension would also probably be too simple to result in life.
https://wn.com/How_Can_Space_And_Time_Be_Part_Of_The_Same_Thing
Can Space Time Remember?
14:40

Can Space Time Remember?

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  • Uploaded Date: 14 Nov 2024
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Go to https://www.buyraycon.com/spacetime for up to 30% off your order, plus free shipping! Brought to you by Raycon. There are cosmic events so powerful that they leave permanent marks on the fabric of the universe itself. Imagine two colossal black holes spiraling into each other, yes they send ripples in the fabric of spacetime—gravitational waves that we’ve only recently learned to sense. Ripples pass, leaving the pond … or the universe … unchanged when they’re gone. But ripples aren’t the only type of wave. There’s another type of wave that leaves a permanent mark—a memory etched in the fabric of the universe. They’re akin to gravitational tsunamis, and we’re on the verge of being able to detect them. Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/spacetime Search the Entire Space Time Library Here: https://search.pbsspacetime.com/ Hosted by Matt O'Dowd Written by Christopher Pollack & Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria Directed by Andrew Kornhaber Associate Producer: Bahar Gholipour Executive Producer: Andrew Kornhaber Executive in Charge for PBS: Maribel Lopez Director of Programming for PBS: Gabrielle Ewing Assistant Director of Programming for PBS: John Campbell Spacetime is a production of Kornhaber Brown for PBS Digital Studios. This program is produced by Kornhaber Brown, which is solely responsible for its content. © 2024 PBS. All rights reserved. End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka Space Time Was Made Possible In Part By: Big Bang Wojciech Szymski Bryce Fort Peter Barrett Alexander Tamas Morgan Hough Juan Benet Vinnie Falco Mark Rosenthal Supernova Grace Biaelcki Glenn Sugden Ethan Cohen Stephen Wilcox Mark Heising Hypernova Dean Galvin Michael Tidwell Robert DeChellis Stephen Spidle Chris Webb Massimiliano Pala Justin Lloyd David Giltinan Kenneth See Gregory Forfa Alex Kern Zubin Dowlaty Scott Gorlick Paul Stehr-Green Ben Delo Scott Gray Антон Кочков Robert Ilardi John R. Slavik Donal Botkin Edmund Fokschaner chuck zegar Gamma Ray Burst Satwik Pani Param Saxena John De Witt Nathaniel Bennett Sandhya Devi Michael Oulvey Arko Provo Mukherjee Mike Purvis Christopher Wade Anthony Crossland Grace Seraph Stephen Saslow Tomaz Lovsin Anthony Leon Lori Ferris Koen Wilde Nicolas Katsantonis Richard Steenbergen Joe Pavlovic Chuck Lukaszewski Cole B Combs Andrea Galvagni Jerry Thomas Nikhil Sharma John Anderson Bradley Ulis Craig Falls Kane Holbrook Ross Story Harsh Khandhadia Michael Lev Rad Antonov Terje Vold James Trimmier Jeremy Soller Paul Wood Kent Durham jim bartosh John H. Austin, Jr. Diana S Faraz Khan Almog Cohen Daniel Jennings Jeremy Reed David Johnston Michael Barton Isaac Suttell Bleys Goodson Mark Delagasse Mark Daniel Cohen Shane Calimlim Tybie Fitzhugh Eric Kiebler Craig Stonaha Frederic Simon Jim Hudson Alex Gan John Funai Adrien Molyneux Bradley Jenkins Vlad Shipulin Justin Waters Thomas Dougherty Zac Sweers Dan Warren Joseph Salomone Julien Dubois
https://wn.com/Can_Space_Time_Remember
How does the curvature of spacetime create gravity?
7:53

How does the curvature of spacetime create gravity?

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  • Uploaded Date: 15 Jun 2024
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In 1919, Arthur Eddington led an expedition to observe a total solar eclipse, confirming that light passing near the Sun is deflected due to its gravity. This observation supported Einstein's theory of general relativity, which differs from Newton's laws by predicting that massive objects warp spacetime, affecting the path of light. Einstein resolved a paradox wherein photons traveling different distances (AB vs. CD) near a massive object like the Sun reach their destination simultaneously. According to special relativity, light's speed is constant, so photons traveling a shorter path (CD) should take less time. However, in general relativity, the presence of a massive object causes time to slow down, an effect called gravitational time dilation. To visualize this, imagine spacetime as a cylinder that, when influenced by a massive object, flares into a cone. Clocks lower in the gravitational field (closer to the cone's wide base) tick slower than those higher up, explaining why time passes differently at different altitudes. This effect has been experimentally confirmed, such as with atomic clocks on airplanes running faster than those on the ground. Gravitational time dilation can be visualized by imagining two ants, one higher (A) and one lower (B) on the cone. Both move through spacetime at the same speed, but B's clock ticks slower due to the cone's shape. Thus, B ages slower than A. This curvature of spacetime not only affects the flow of time but also creates gravity. Objects naturally follow the curved paths in spacetime, leading them to fall towards massive bodies. A stationary object's path in curved spacetime slopes toward the massive body, causing it to fall, illustrating that gravity is the manifestation of curved spacetime geometry. This explains why an object falls faster as it moves closer to a massive body and why, hypothetically, an object falling infinitely would reach the speed of light due to the extreme curvature of spacetime.
https://wn.com/How_Does_The_Curvature_Of_Spacetime_Create_Gravity
What If The Universe DID NOT Start With The Big Bang?
18:24

What If The Universe DID NOT Start With The Big Bang?

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  • Uploaded Date: 26 Sep 2024
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👉 Head to https://brilliant.org/spacetime/ for a 30-day free trial + 20% off your annual subscription Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Here’s the story we like to tell about the beginning of the universe. Space is expanding evenly everywhere, but if you rewind that expansion you find that all of space was once compacted in an infinitesimal point of infinite density—the singularity at the beginning of time. The expansion of the universe from this point is called the Big Bang. We like to tell this story because it's the correct conclusion from the description of an expanding universe that followed Einstein's general theory of relativity back in the 19-teens. But since then we've learned so much more since then. Does our modern understanding of the universe still insist on a point-like Big Bang? Recent work actually gives us a way to avoid the beginning of time. Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/spacetime Search the Entire Space Time Library Here: https://search.pbsspacetime.com/ Hosted by Matt O'Dowd Written by Richard Dyer & Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria Directed by Andrew Kornhaber Associate Producer: Bahar Gholipour Executive Producers: Eric Brown & Andrew Kornhaber Executive in Charge for PBS: Maribel Lopez Director of Programming for PBS: Gabrielle Ewing Assistant Director of Programming for PBS: John Campbell Spacetime is a production of Kornhaber Brown for PBS Digital Studios. This program is produced by Kornhaber Brown, which is solely responsible for its content. © 2024 PBS. All rights reserved. End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka Space Time Was Made Possible In Part By: Big Bang Wojciech Szymski Bryce Fort Peter Barrett Alexander Tamas Morgan Hough Juan Benet Vinnie Falco Mark Rosenthal Supernova Grace Biaelcki Glenn Sugden Ethan Cohen Stephen Wilcox Mark Heising Hypernova Richard Pavlicek Dean Galvin Michael Tidwell Robert DeChellis Stephen Spidle Chris Webb Justin Lloyd David Giltinan Kenneth See Gregory Forfa Alex Kern Scott Gorlick Paul Stehr-Green Ben Delo Scott Gray Антон Кочков Robert Ilardi John R. Slavik Donal Botkin Edmund Fokschaner chuck zegar Daniel Muzquiz Gamma Ray Burst Param Saxena John De Witt Kevin Vallejo Nathaniel Bennett Sandhya Devi Michael Oulvey Arko Provo Mukherjee Mike Purvis Christopher Wade Anthony Crossland treborg777 Grace Seraph Stephen Saslow Tomaz Lovsin Anthony Leon Lori Ferris Koen Wilde Nicolas Katsantonis Richard Steenbergen gmmiddleton Joe Pavlovic Chuck Lukaszewski Cole B Combs Andrea Galvagni Jerry Thomas Nikhil Sharma John Anderson Bradley Ulis Craig Falls Kane Holbrook Ross Story Harsh Khandhadia Jammer Matt Q Michael Lev Rad Antonov Terje Vold James Trimmier comboy Jeremy Soller Paul Wood Kent Durham jim bartosh qntum John H. Austin, Jr. Diana S Faraz Khan Almog Cohen Daniel Jennings Jeremy Reed David Johnston Michael Barton Isaac Suttell Bleys Goodson Mark Delagasse Mark Daniel Cohen Shane Calimlim Tybie Fitzhugh Eric Kiebler Craig Stonaha Frederic Simon Tonyface Jim Hudson Alex Gan John Funai Adrien Molyneux Bradley Jenkins Vlad Shipulin Justin Waters Thomas Dougherty Dan Warren Joseph Salomone Julien Dubois
https://wn.com/What_If_The_Universe_Did_Not_Start_With_The_Big_Bang
Time Travel: Exploring Paradoxes, Possibilities, and Scientific Frontiers #timeTravel   #spaceTime
0:48

Time Travel: Exploring Paradoxes, Possibilities, and Scientific Frontiers #timeTravel #spaceTime

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  • Uploaded Date: 09 Dec 2024
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Time travel has fascinated humanity for generations, intertwining scientific theories and imaginative storytelling. From Einstein's groundbreaking theory of relativity to the speculative concept of wormholes, this captivating topic invites questions about the nature of time and our place within it. Einstein's theory of relativity introduced the idea that time is not a fixed constant but a flexible dimension interconnected with space, forming what we know as space-time. This revolutionary concept suggests that under certain conditions, such as traveling at nearly the speed of light or being near massive objects, time can stretch or contract. This phenomenon, known as time dilation, offers a theoretical foundation for moving through time, albeit with practical limitations that challenge our current understanding of physics. Among these challenges are the immense energy requirements and the need for exotic materials like negative energy. Scientists speculate that such materials might stabilize space-time distortions or even sustain wormholes, theoretical tunnels connecting distant points in space and time. While intriguing, these ideas remain speculative and unproven, existing more in the realm of theoretical physics than applied science. Equally compelling are the time travel paradoxes that arise when altering the past. The famous grandfather paradox questions whether changing past events could disrupt the causality that led to the traveler's existence. Solutions to such paradoxes range from the speculative notion of alternate universes to the idea that time may be self-consistent, with past events unchangeable. Time travel also thrives in the realm of science fiction, inspiring countless stories and novels that explore its possibilities and ethical implications. Iconic works like Frank Herbert’s Dune, Kim Stanley Robinson's Red Mars series, and Octavia Butler's Kindred bring imaginative depth to the topic. Theories of space-time manipulation, causality, and futuristic technology are woven into tales that reflect humanity’s curiosity and creativity. Recent books, including Liu Cixin’s Three-Body Problem and Ted Chiang's Stories of Your Life and Others, continue to push the boundaries of sci-fi novels, offering fresh perspectives on time travel and space-time theories. Audiobook adaptations and new releases, such as the Foundation series by Apple, make these concepts accessible to diverse audiences, showcasing the intersection of science, philosophy, and narrative. Exploring time travel not only deepens our understanding of theoretical physics but also inspires profound questions about the universe. Whether through best sci-fi books or groundbreaking research, the journey toward uncovering the truth behind time travel continues to captivate and challenge humanity. Tags: #timeTravel #EinsteinsTheoryOfRelativity #spaceTime #wormholes #timeTravelParadoxes #theoreticalPhysics #negativeEnergy #grandfatherParadox #scienceFiction #spaceTimeManipulation #bestSciFiBooks #scienceFictionBooks #bestScienceFictionBooks #sciFiBooks #bestSciFiBooks2022 #octaviaButler #bestSciFiAudiobooks #timeTravelBooks #theoryOfRelativity #bestNewSciFiBooks #bestScienceFictionBooks2022 #goodSciFiBooks #ursulaLeGuin #bestScifiBooks #sciFiAudiobooks #topSciFiBooks #newSciFiBooks #duneFrankHerbert #bestSciFiBooksOfAllTime #kimStanleyRobinson #cixinLiu #foundationSeriesApple #bestTimeTravelBooks #newScienceFictionBooks #bestSciFiNovels #tedChiang #sciFiBooks2022 #scienceFictionPublishers #sciFiBooksToRead #greatSciFiBooks #bestSciFiBookSeries #frankWilczek #liuCixin #goodScienceFictionBooks #topScienceFictionBooks #bestScienceFictionAudiobooks #bestNewScienceFictionBooks #sciFiNovels #bestScienceFictionBooksOfAllTime #classicSciFiBooks
https://wn.com/Time_Travel_Exploring_Paradoxes,_Possibilities,_And_Scientific_Frontiers_Timetravel_Spacetime
Neil deGrasse Tyson Explains the Space-time Continuum
13:39

Neil deGrasse Tyson Explains the Space-time Continuum

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  • Uploaded Date: 29 Jun 2021
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What are the consequences of playing with the SPACE-TIME CONTINUUM? On this explainer, Neil deGrasse Tyson and comic co-host Chuck Nice break down the space-time continuum in real life and in pop culture. Find out about Einstein's special theory of relativity and our four dimensions. Neil and Chuck make lunch plans as they navigate space and time. What critiques does Neil have of The Terminator and Back to the Future? What are some unintended complications of time travel? Discover the concept of worldliness, getting unstuck from time in Slaughterhouse 5, and how time travel is just a changing of dimensions. About the prints that flank Neil in this video: "Black Swan” & "White Swan" limited edition serigraph prints by Coast Salish artist Jane Kwatleematt Marston. For more information about this artist and her work, visit Inuit Gallery of Vancouver. https://inuit.com/ Support us on Patreon: https://www.patreon.com/startalkradio FOLLOW or SUBSCRIBE to StarTalk: YouTube: https://www.youtube.com/user/startalkradio?sub_confirmation=1 Twitter: http://twitter.com/startalkradio Facebook: https://www.facebook.com/StarTalk Instagram: https://www.instagram.com/startalkradio/ About StarTalk: Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! #StarTalk #NeildeGrasseTyson
https://wn.com/Neil_Degrasse_Tyson_Explains_The_Space_Time_Continuum
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What Exactly is Spacetime? Explained in Ridiculously Simple Words

Spacetime, as a concept, is related to a space that consists of 4 dimensions instead of the regular 3-dimensional space. As early as 1905, Einstein proposed a now widely popular theory that the speed of light is independent of the motion of all observers, and that space and time are interconnected in a single continuum. This theory, which is now a cornerstone of modern and quantum physics, is known as Einstein’s special theory of relativity. Einstein's proposed idea of a single continuum where space and time are interwoven is what people call “space-time”. According to this theory, time—which has traditionally been considered an independent entity according to the principles of classical physics—is affected when a body moves through space. This happens because, according to the theory, time and space are connected and part of a single continuum—spacetime. In this video, we discuss spacetime in absolutely simple words: what exactly is spacetime and how is it related to the force of gravitation and Einstein’s theory of relativity? #science #animation #spacetime References: https://asd.gsfc.nasa.gov/blueshift/index.php/2015/11/25/100-years-of-general-relativity/ https://sci.esa.int/web/lisa-pathfinder/-/56434-spacetime-curvature https://sites.pitt.edu/~jdnorton/teaching/HPS_0410/chapters/Special_relativity_rel_sim/index.html If you wish to buy/license this video, please write to us at admin@scienceabc.com. Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood ) SUBSCRIBE to get more such science videos! https://www.youtube.com/channel/UCcN3IuIAR6Fn74FWMQf6lFA?sub_confirmation=1 Follow us on Twitter! https://twitter.com/abc_science Follow us on Facebook! https://facebook.com/sciabc Follow our Website! https://www.scienceabc.com
4:56
What Exactly is Spacetime? Explained in Ridiculously Simple Words
Spacetime, as a concept, is related to a space that consists of 4 dimensions instead of th...
published: 04 Oct 2021
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What if we could see Spacetime? An immersive experience
A visual and musical journey to the edge of our universe, visualizing the fabric of space-...
published: 04 Mar 2024
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19:42
Space-Time: The Biggest Problem in Physics
What is the deepest level of reality? In this Quanta explainer, Vijay Balasubramanian, a p...
published: 25 Sep 2024
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5:06
The fundamentals of space-time: Part 1 - Andrew Pontzen and Tom Whyntie
View full lesson: http://ed.ted.com/lessons/the-fundamentals-of-space-time-part-1-andrew-p...
published: 24 Mar 2014
Play in Full Screen
15:46
How Can SPACE and TIME be part of the SAME THING?
Go to https://brilliant.org/ArvinAsh to get a 30-day free trial + the first 200 people wil...
published: 19 Aug 2023
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14:40
Can Space Time Remember?
Go to https://www.buyraycon.com/spacetime for up to 30% off your order, plus free shipping...
published: 14 Nov 2024
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7:53
How does the curvature of spacetime create gravity?
In 1919, Arthur Eddington led an expedition to observe a total solar eclipse, confirming t...
published: 15 Jun 2024
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18:24
What If The Universe DID NOT Start With The Big Bang?
👉 Head to https://brilliant.org/spacetime/ for a 30-day free trial + 20% off your annual s...
published: 26 Sep 2024
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Time Travel: Exploring Paradoxes, Possibilities, and Scientific Frontiers #timeTravel #spaceTime
Time travel has fascinated humanity for generations, intertwining scientific theories and ...
published: 09 Dec 2024
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13:39
Neil deGrasse Tyson Explains the Space-time Continuum
What are the consequences of playing with the SPACE-TIME CONTINUUM? On this explainer, Nei...
published: 29 Jun 2021
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Spacetime

In physics, spacetime is any mathematical model that combines space and time into a single interwoven continuum. The spacetime of our universe has historically been interpreted from a Euclidean space perspective, which regards space as consisting of three dimensions, and time as consisting of one dimension, the "fourth dimension". By combining space and time into a single manifold called Minkowski space, physicists have significantly simplified a large number of physical theories, as well as described in a more uniform way the workings of the universe at both the supergalactic and subatomic levels.

Explanation

In non-relativistic classical mechanics, the use of Euclidean space instead of spacetime is appropriate, because time is treated as universal with a constant rate of passage that is independent of the state of motion of an observer. In relativistic contexts, time cannot be separated from the three dimensions of space, because the observed rate at which time passes for an object depends on the object's velocity relative to the observer and also on the strength of gravitational fields, which can slow the passage of time for an object as seen by an observer outside the field.

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