Optical Effects of Special Relativity
Uploaded by: BrunoTheQuestionable
Video Description:
The video shows photorealistic representations of reduced c scenes. This means that the speed of light has been slowed down from over one billion kilometres per hour to a speed of only one meter per second. The consequences of this fiction have been restricted to optical effects, and allows us to see special-relativistic effects not possible in everyday life.
The first scene is a trip down a highway without any relativistic effects. Note the position and orientation of the structures in the desert.
For the next trip, we enable relativistic aberration. As we accelerate, note that the angular compression creates an initial impression of backwards motion. As we pass the sign, it seems to rotate around. This can be viewed as a Terrell rotation, or as angular aberration keeping the sign in our field of view as we pass it. The back walls of the building are also visible, and extreme distortion is visible on all the objects. Note particularly the sky, steadily shrinking down to the vanishing point.
We now enable Doppler shifting. Note that the red desert is blue-shifted ahead through the green and red, causing a rainbow effect. As the blue of the sky is further blue-shifted, it drains of colour. Near the edges of the image, the opposite happens - the sky takes on a reddish hue and the road is drained of colour as the red desert shifts into the infra-red.
With full relativistic effects (now including the headlight effect) the image quickly turns monotone, with objects near the edge of the screen darkened, and the centre brightly illuminated.
The Terrell effect can be illustrated with this flyby of a cube. Note the orientation of the cube change. Also compare it's apparent position with the position indicated on the HUD map. Remember, we are seeing the cube as it was, not as it is.
If we instead fly through the cube, the structures Terrell rotate independently, seeming to turn the cube inside out. Note that even when we have exited the back of the cube, aberration keeps most of it in view.
Another property of aberration is that it preserves circles - that is, a sphere will always present a spherical outline to any observer regardless of their relative motion. We see this demonstrated by flying a camera around the Earth at high speed. Though the camera is very close to the surface, aberration wraps the Earth into our forward field of view. But because we are so close to the earth, we can see only a small portion of its surface - so small regions, about the size of Borneo seem to bulge out and fill the sphere.
Tags for this video: Effects Optical Relativity Special
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I only insult patronising people who attempt to talk down to me. ;-)
Anyway, nice 'talking' to you mr talking textbook man
I apologise for referring to the Terrell rotation as such, I'm merely using the standard academic term, I could refer to it as the Penrose effect if you wish. In fact I don't really like to refer to Einstein's STR, considering most of the philosophy and maths behind was due to Lorentz and Poincaré... :)
The only minor difference is the lorentz contraction in the direction of motion for relativistic treatment. But some people like making up meaningless names for things that don't really tell us anything that we didn't already know ;-)
Now you're typing absolute garbage about 4-D manifolds that dont relate to this video in any way shape or form.
What exactly are you trying to achieve with this crap?
but in any case this video is mileading. I think the distortions are in fact more prevalent witout relativity theory. The effects are not caused by special relativity at all.
so wouldnt the house and the road the observer is flying by shring to like 10% of its length
I think you'd do better expalining why there's no length contraction in this video if you'd just admit the effects being displayed actually have nothing to do with special relativity. simple
"The effect of aberration was known before the theory of special relativity, it is a consequence of the finite speed of light... "
Similarly there is a classical analogue to doppler shifting. However these are quantitatively different from the result derived from STR, although being qualitatively the same. This is a subtlety that can't be demonstrated in a video however...
Doesn't the time dilation occurs exactly becuse of this dilation of space? (as the speed would travel at the same speed but through a larger disantce).
The only way in wich I can work time dilation out is as an optical illusion wich everything says that is not.
Please Help.
But I can't work it out in that way, beacuse when you imagine the other experiment, the one with the beam of light bouncing between two mirrors then you see that the observer sees the other guy's clock moving through a larger path (diagonally rather than vertically).