Recent questions in Special Relativity

+46 votes

0 answers

What would have happened if immediately after the big bang all matter and energy in the universe traveled faster than the speed of light without slowing down?

asked Jan 18, 2022 in Special Relativity by Dave does Gas

+3 votes

0 answers

Can you explain time dilation and space dilation?

asked Jan 18, 2022 in Special Relativity by EmberTwilight

+23 votes

0 answers

What is the preferred frame of reference in relativity?

asked Jan 17, 2022 in Special Relativity by CrystalSculptor

0 votes

0 answers

As we approach the speed of light, why does time appear to move slower rather than distance appearing to shorten?

asked Jan 16, 2022 in Special Relativity by Johnik

+2 votes

0 answers

What is the perceived length of a 1-meter thick stick if it is moving with the velocity of 0.5c relative to Earth?

asked Jan 16, 2022 in Special Relativity by X (3.0k points)

+58 votes

0 answers

What speed do you have to go to go back in time (theoretically)?

asked Jan 15, 2022 in Special Relativity by Keith F Wannell

+27 votes

0 answers

What would happen if light waves could travel slower than the speed of light?

asked Jan 15, 2022 in Special Relativity by AdamPalo

+23 votes

0 answers

How can we relate momentum and energy for electrons in motion with a speed less than the speed of light but greater than zero?

asked Jan 14, 2022 in Special Relativity by skinny d

+20 votes

0 answers

How can the speed of light be the same in different media even though their wavelengths depend on the medium (e.g., water)?

asked Jan 14, 2022 in Special Relativity by ram

+218 votes

0 answers

If going faster than the speed of light (say 3x) = time travel, will we go forward or backwards in time?

asked Jan 12, 2022 in Special Relativity by Dan John

+70 votes

0 answers

Is it possible to fold space-time? Would that allow for faster than light speeds?

asked Jan 12, 2022 in Special Relativity by ShubieDoo

+223 votes

0 answers

How do we know that the speed of light is the fastest possible speed in the universe and are there alternative theories that suggest there are faster speeds?

asked Jan 12, 2022 in Special Relativity by pal123

+93 votes

0 answers

Why is any sound's pitch higher when you speed it up and lower when you slow it down?

asked Jan 12, 2022 in Special Relativity by Geriko

+21 votes

0 answers

Is it correct that the latitude and altitude of Egyptian pyramids of Giza are the same number as the speed of light?

asked Jan 12, 2022 in Special Relativity by Have-a-go-Seano

+134 votes

0 answers

How does time dilation, as predicted by relativity, affect the perceived speed of light in a medium?

asked Jan 12, 2022 in Special Relativity by Oddbod

+3 votes

0 answers

Through which medium does light travel the fastest?

asked Jan 11, 2022 in Special Relativity by QuantumNomad

+18 votes

0 answers

A light year is measure of length equal to the distance that light travel in one year. What is the conversion factor between light year and meter?

asked Jan 11, 2022 in Special Relativity by Arta (2.2k points)

+27 votes

0 answers

Is there any medium where light cannot propagate (travel)?

asked Jan 10, 2022 in Special Relativity by NebulaFlare

+77 votes

0 answers

What's so special about Special relativity? E=mc^2 is nothing but Kinetic Energy (K=mv^2/2) applied to subatomic particles moving at (or very close to) the speed of light.

asked Jan 10, 2022 in Special Relativity by eightyboot

+13 votes

0 answers

What arguments/predictions/observations based specifically in special or general relativity (as opposed to Newtonian physics) can be used to disprove flat Earth theory?

asked Jan 10, 2022 in Special Relativity by anew spark

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