Recent questions in Relativity physics

+16 votes

0 answers

Assuming I have the altitude of the Space Station, and its moving with a constant speed, as it moves across my field of view from left to right, is there any way to calculate its speed?

asked Apr 11, 2022 in Relativity physics by InfernoWanderer

+54 votes

0 answers

Did Einstein ever really decide whether his Theory of Special relativity related to the proper reference of the observed object, or the perception of the observer as per Lorentz? And if so, is the consensus of physicist clear on this issue?

asked Mar 18, 2022 in Relativity physics by DIY Guy

+108 votes

0 answers

What happens to an object if it falls into a black hole or if it just passes by one at light speed?

asked Mar 16, 2022 in Relativity physics by StellarVerse

+652 votes

0 answers

How can light have momentum if it has no mass according to relativity theory and Heisenberg’s uncertainty principle?

asked Mar 16, 2022 in Relativity physics by mike jay

+70 votes

0 answers

Does light travel forever or does it eventually fade?

asked Mar 13, 2022 in Relativity physics by mp8410

+5 votes

0 answers

Doesn't the energy-time uncertainty allude to time being an observable? Since relativity tells us there is no fundamental difference between space and time, and energy is the time component of the 4 momentum, it seems natural to guess so.

asked Mar 12, 2022 in Relativity physics by blannder

+24 votes

0 answers

How do you define "time dilation" in the gravitational field?

asked Mar 11, 2022 in Relativity physics by QfanatiQ

+24 votes

0 answers

What is the light speed in the universe, and where does the light come from to go where?

asked Feb 20, 2022 in Relativity physics by RadiantDreamer

+10 votes

0 answers

Why does fire have no shadow?

asked Feb 20, 2022 in Relativity physics by GoldenArches

+279 votes

0 answers

According to special relativity, a body's *relativistic* mass increases with increasing spatial speed. Would this effect be accompanied by an increased warping of its surrounding spacetime?

asked Feb 19, 2022 in Relativity physics by QuantumHarmony

+161 votes

0 answers

During the onward journey from Bombay to Pune, Deccan Queen travels at an average speed of 100kmph, while on the return journey, the train is able to average a speed of 50kmph. What is the average speed of the train on its entire journey?

asked Feb 19, 2022 in Relativity physics by Link64

+26 votes

0 answers

What happens to light if it moves at the speed of light? Does it have any frequency or wavelength, or does it just become invisible to us?

asked Feb 16, 2022 in Relativity physics by Weekend Warrior (3.7k points)

+171 votes

0 answers

What are some examples of mechanical waves (sound) that have been proven to travel faster than the speed of light in vacuum (or air)? Why isn't this observed experimentally with light as well then?

asked Feb 16, 2022 in Relativity physics by Naesure

+50 votes

0 answers

How does the weight of an object affect its momentum when it's moving at a constant speed?

asked Feb 12, 2022 in Relativity physics by bun the plumb

+23 votes

0 answers

Would GR gravitational time dilation equation " [2GM/c^2] /R" reveal one day that its true nature is just a small cyclical hold/freeze that a star forces on a planet for multiple cosmic purposes including gravity alternative to spacetime?

asked Feb 12, 2022 in Relativity physics by bikingliberated

+305 votes

0 answers

Hypothetically, if we could stop time but still be able to observe our world while it is stopped, what would happen to light? How about gravity?

asked Feb 11, 2022 in Relativity physics by LuminousNova

+9 votes

0 answers

If gravity was stronger, would we be able to travel faster than light using a spaceship?

asked Feb 11, 2022 in Relativity physics by Sammyjim5

+6 votes

0 answers

If the universe is expanding faster than the speed of light, does that mean faster than light travel is possible and we just haven’t found the right way to do it yet?

asked Feb 10, 2022 in Relativity physics by Sean_ork

+27 votes

0 answers

If e=mc^2, that should mean that if two planets of the same mass go different speeds, the faster one would have a stronger gravitational pull, or am I not understanding right?

asked Jan 20, 2022 in Relativity physics by Angry Squirrel

+43 votes

0 answers

How fast can you go over the speed limit on the interstate?

asked Jan 18, 2022 in Relativity physics by Barn Raiser (2.2k points)

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Recent questions in Relativity physics

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