Recent questions in Speed of Light

+16 votes

0 answers

In which media does light travel slowly?

asked Mar 16, 2023 in Speed of Light by MichaelW

+15 votes

0 answers

How can humans in a spaceship withstand the acceleration during fast travelling (e.g., into the speed of light)?

asked Mar 15, 2023 in Speed of Light by Ontheway

+25 votes

0 answers

If two astronauts are traveling at speeds close to the speed of light in opposite directions, will they be able to see each other age slowly as they pass by one another on their ships (but not outside)?

asked Mar 15, 2023 in Speed of Light by QuantumSculptor

+35 votes

0 answers

How far can a spacecraft travel in one second if it is traveling at the speed of light?

asked Mar 15, 2023 in Speed of Light by blazesquat

+2 votes

0 answers

How do scientists think about the problem of someone running faster than the speed of light in real life?

asked Mar 15, 2023 in Speed of Light by SolarisSeeker

+303 votes

0 answers

Why are momentum and energy not related as

asked Mar 15, 2023 in Speed of Light by StellarVerse

+322 votes

0 answers

If the universe is expanding faster than the speed of light because of dark energy so how is dark matter interacting with expansion of universe as dark matter is also part of our universe and it's speed is bound to speed of light?

asked Mar 15, 2023 in Speed of Light by StrugglingDIYer

+9 votes

0 answers

When will science fiction become reality (for example, faster than light travel)?

asked Mar 15, 2023 in Speed of Light by LunarEnigma

+84 votes

0 answers

Can somebody perform a thought experiment on the interrelatedness of the speed of light to the quantum realm? The speed of light is based on 2 other constants: permeability and permittivity of free space. What does quantum mechanics say about these?

asked Mar 14, 2023 in Speed of Light by CelestialTwilight (2.8k points)

0 votes

0 answers

How will humans ever leave our Galaxy if we can't exceed the speed of light?

asked Mar 14, 2023 in Speed of Light by Briony

+21 votes

0 answers

If you shoot two flashlights in opposite directions, spots of 2 light years apart are lit up 1 year later. Doesn't this disprove Einstein as the photons had to travel at 2x light speed relative to each other to achieve this distance?

asked Mar 14, 2023 in Speed of Light by Mememe 2

+27 votes

0 answers

What makes the electrical current travel through wires at nearly the speed of light? Why does it travel much slower in other materials?

asked Mar 14, 2023 in Speed of Light by AstralBreeze

+14 votes

0 answers

Is it possible to exceed the speed of light without infinite energy or violating special relativity?

asked Mar 14, 2023 in Speed of Light by SolarisSculptor

+18 votes

0 answers

What will happen if water travels at the speed of light?

asked Mar 14, 2023 in Speed of Light by Nick058162

+28 votes

0 answers

How do scientists use light to measure distances on Earth and in space?

asked Mar 14, 2023 in Speed of Light by igorrubets (3.2k points)

+156 votes

0 answers

What is the upper limit for the speed of light or sound?

asked Mar 14, 2023 in Speed of Light by QfanatiQ

0 votes

0 answers

What is the speed of light divided by mass?

asked Mar 14, 2023 in Speed of Light by Sarah Barker

+22 votes

0 answers

If the universe is expanding at the speed of light, and that's why we can't travel to distant galaxies, doesn't mean that relevant to those distant galaxies, we are travelling at the speed of light and therefore shouldn't be able to perceive time?

asked Mar 13, 2023 in Speed of Light by Star-Delta

+88 votes

0 answers

How can electrons achieve speeds close to the speed of light without being destroyed due to their large charge?

asked Mar 13, 2023 in Speed of Light by Cross Staff

+24 votes

0 answers

How does Star Trek do faster-than-light (FTL) travel if we can't go faster than the speed of light?

asked Mar 13, 2023 in Speed of Light by Tom_MM

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