Recent questions in Speed of Light

+59 votes

0 answers

If something goes beyond or reaches the speed of light, will anything ever exist again as before?

asked Jan 17, 2022 in Speed of Light by Ray Retired

+142 votes

0 answers

How long would it actually take to travel 40 light years, given time moves differently at high speeds? Would it actually take generations for the people on board, or would time move slower for them due to their speed?

asked Jan 17, 2022 in Speed of Light by LunarCharm

+21 votes

0 answers

During the time that sound travels 1100 feet in air, light can travel in vacuum a distance of about?

asked Jan 16, 2022 in Speed of Light by Ion Transient

+13 votes

0 answers

How do Lorentz transformations prove that the speed of light is constant in all inertial frames?

asked Jan 16, 2022 in Speed of Light by JBABZ

+21 votes

0 answers

Two peoples 1st is in space without moving The 2nd person runs at 99% of speed of light in a doughnut-shaped spaceship moving itself at 99% of speed of light. What is the difference in the passage of time between person 1 and person 2?

asked Jan 16, 2022 in Speed of Light by Martyn21uk

+7 votes

0 answers

What happens to visible light when it travels too far without hitting something like an object or a planet/star etc.?

asked Jan 16, 2022 in Speed of Light by Jay777

+284 votes

0 answers

What would happen if you travelled faster than the speed of light? Would you reach your destination before you even left?

asked Jan 15, 2022 in Speed of Light by CaptainSparrow

+511 votes

0 answers

How would you determine if two objects are moving at the same speed relative to each other?

asked Jan 15, 2022 in Speed of Light by Confused 332

+19 votes

0 answers

How long does it take light from a distant Galaxy to reach Earth? How far away is that Galaxy?

asked Jan 15, 2022 in Speed of Light by MartinPL

+23 votes

0 answers

What will happen to a body's mass if it travels at half the speed of light, according to Einstein's theory?

asked Jan 15, 2022 in Speed of Light by BillDL

+45 votes

0 answers

If you were to travel to Pluto in a spacecraft flying at 80% the speed of light, how long would the journey take?

asked Jan 14, 2022 in Speed of Light by clarksy

+21 votes

0 answers

Why would it be very impossible for a spacecraft to travel across the entire Solar System or even the entire Galaxy within just a single day, even unlikely at faster than the speed of light?

asked Jan 14, 2022 in Speed of Light by Daver77

+11 votes

0 answers

Can travelling at speeds greater than the speed of light cause one to enter hyperspace or warp space?

asked Jan 14, 2022 in Speed of Light by EmberNova

+17 votes

0 answers

Einstein said that any object with mass, can't travel at the speed of light and a massless object, gains mass, when it travells at the speed of light.is it not a paradox?

asked Jan 14, 2022 in Speed of Light by Lyn 1

+58 votes

0 answers

Why does it take 4 years for light to travel from Proxima Centauri but only 8 minutes from the Sun?

asked Jan 14, 2022 in Speed of Light by JT101

+257 votes

0 answers

According to De Broglie equation a frequency is f=mc2/h. Is this only valid for particles in vacuum (c= speed of light in vacuum) or also in other medium? Should the speed of light "c" be replaced by the speed of EM waves in the required medium?

asked Jan 14, 2022 in Speed of Light by E.C.V.

+1.4k votes

0 answers

Does the speed of light ever change in space? If so, at what point does it stop or start changing?

asked Jan 13, 2022 in Speed of Light by pangy

+47 votes

0 answers

Although space is a vacuum, it's not exactly empty. There are lots of atoms floating in it. If we could achieve near light-speed, wouldn't our ship start to heat up from friction?

asked Jan 13, 2022 in Speed of Light by Chrisfire

+27 votes

0 answers

How do we know the speed of light is not additive to its source, e.g. if I'm moving 10'/s North and shine my laser North it's not 10'/s + c? Michelson-Morley only shows there's no special frame in which it's constant.

asked Jan 13, 2022 in Speed of Light by trunkinitiative

+19 votes

0 answers

Is light constant speed a science or an expression of ignorance of astronomers and physical scientists of physicists, physical chemists, physical biologists, physical engineers and technologists considering light speed measurements are hypothetical?

asked Jan 13, 2022 in Speed of Light by billfromarran (3.9k points)

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