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# A visualization of special relativity

This video is an entry for the Breakthrough Junior Challenge 2015 which gives a unique visualization of Special Relativity using hyperbolic geometry. This idea was inspired by the famous woodcut by M.C. Escher Circle Limit III.

## Want to join the conversation?

• Are these videos taken from another source?
• What is the most interesting thing is this video to everyone?
• what is Time??(the definition)
• the indefinite continued progress of existence and events in the past, present, and future regarded as a whole. or a point of time as measured in hours and minutes past midnight or noon.
(1 vote)
• Let’s say a you’re in a car travelling at half the speed of light (c/2) and you shine a torch directly in front of you. We’d assume that the velocity or the light, relative to the car is c/2 (which is c-c/2) BUT isn’t the case, because when we approach the speed of light (or when travelling at c/2) time appears to pass more slowly inside the car. This means that the light would appear to be travelling more distance per second because the second is stretched out for a longer period. And so the speed of light relative to the observer is C.

This is relativity which states that the speed of light is absolute.

My question is, if the same rules apply, what happens if we shine the light in the opposite direction to which the car is travelling? Surely time would pass more slowly inside the car because the car is travelling at c/2. And hence the speed of light relative to the car would appear to cover more distance in a given amount of time (eg. in one second), which would conclude that it’s actually travelling at more than c. Is this correct??
• How an object like they said can have two centers?
(1 vote)
• Think back to the first example given in the video: a 2-D plane. All planes are infinite, meaning they go on forever in every direction. Even though they are represented as a rectangle, you will never actually be able to reach the edge. Technically, every 2-D object is part of every 2-D plane with the same orientation.

Because 2-D planes are infinite, you can be at any point on the plane and still be the same (infinite) distance from all of the edges. This can be very hard to understand if you don't have a concept of infinity. If you want more explanation ask in the comments, and I'll try to help you.
• Where is the next video on Schrodinger? Thanks! :P
(1 vote)

If they are indeed comparable, wouldn't an object then be able to accelerate to so close to the speed of light (C) that it would be traveling at a speed equivalent to C for all practical purposes?
(1 vote)
• How an object like they said can have two centers?
(1 vote)
• I think you asked this twice...

This is Jonathan Ziesmer's answer (in case you didn't see it):
Think back to the first example given in the video: a 2-D plane. All planes are infinite, meaning they go on forever in every direction. Even though they are represented as a rectangle, you will never actually be able to reach the edge. Technically, every 2-D object is part of every 2-D plane with the same orientation.

Because 2-D planes are infinite, you can be at any point on the plane and still be the same (infinite) distance from all of the edges.
(1 vote)
• what is length contraction in theory of relativity
(1 vote)