Recent questions in Relativity physics

+45 votes

0 answers

How does a photon of light accelerate to the speed of light without expending any energy to do so?

asked May 20, 2023 in Relativity physics by timber ninja

+6 votes

0 answers

Is it true if you go faster than the speed of light around the earth in the opposite direction of the earth's rotation you can go back in time?

asked May 18, 2023 in Relativity physics by yoyo121

+9 votes

0 answers

What is the correlation of relativity and time dilation?

asked May 18, 2023 in Relativity physics by LarryH

+4 votes

0 answers

Why is the speed of sound constant for all mediums?

asked May 18, 2023 in Relativity physics by RadiantAlchemy

+219 votes

0 answers

How long will it take to travel 4 light years?

asked May 18, 2023 in Relativity physics by QuantumFlare

+16 votes

0 answers

Considering there are so many issues with Einstein theories were many components of his ideas on physics have been disproven, does this mean faster than light travel could be possible?

asked May 18, 2023 in Relativity physics by SolarisTwilight

+24 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 May 18, 2023 in Relativity physics by LuminousDreamer

+142 votes

0 answers

In the muon experiment, it is said that the muon observes the atmosphere as length contracted. But the entire universe would be length contracted according to the muon! How is this possible? Are time dilation and length contraction illusions of SR?

asked May 18, 2023 in Relativity physics by SapphireDreamer

+21 votes

0 answers

Why does time slow down and not warp like light in the presence of gravity?

asked May 17, 2023 in Relativity physics by switchtada

+6 votes

0 answers

Does velocity slow as you approach the event horizon of a black hole as a result of time dilation from the intense gravitational forces?

asked May 17, 2023 in Relativity physics by MCH

+282 votes

0 answers

How long does light take to attain full speed?

asked May 17, 2023 in Relativity physics by simon Kearns

+14 votes

0 answers

Was Einstein's understanding that Light Speed is relative to the Observer the very first tentative understanding of the Observer Effect, and therefore not a valid description of generalised unobserved behaviour?

asked May 15, 2023 in Relativity physics by JarraMag

+14 votes

0 answers

Twins A and B depart from triplet X in opposite directions and at the same speed, reaching space stations C and D equidistant from X with synchronized clocks. Does A’s clock run slower than B’s clock according to special relativity and vice versa?

asked May 15, 2023 in Relativity physics by wetneck

+11 votes

0 answers

What are some examples of movies that show time dilation?

asked May 14, 2023 in Relativity physics by SolarisNova

+25 votes

0 answers

Why is there light on Earth but not in space?

asked May 11, 2023 in Relativity physics by lilyp

+18 votes

0 answers

What if you had a rope tied between Earth and Mars and someone pulled it on Earth, would you feel the pull immediately on Mars? I know a message can't travel faster than light, but why in this case?

asked May 10, 2023 in Relativity physics by firestop

+19 votes

0 answers

Was there anything wrong with Newton's Law of Universal gravitation? How did Einstein's theory of relativity fix it?

asked May 10, 2023 in Relativity physics by Moto Slug

+28 votes

0 answers

What is the connection between inertia and time dilation according to Einstein's theory of general relativity (in the absence of gravity)?

asked May 10, 2023 in Relativity physics by NovaMystic

+141 votes

0 answers

If the radius of an object is doubled, how far does it move in one revolution? How does this affect the speed of the object?

asked Apr 20, 2023 in Relativity physics by LuminousHorizon

+7 votes

0 answers

In his original paper on special relativity, why did Einstein use "spatially relative" terms such as 'inertial frame' and 'events' when talking about time dilation?

asked Apr 20, 2023 in Relativity physics by cottonvalid

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Recent questions in Relativity physics

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