I Think they put lots of mirrors and shone a light and timed how long it took to bounce off each mirror with a computer.
The speed of light IN A VACUUM is always the same. In substances other than the vacuum, the speed of light is usually slower than in a vacuum.
The speed of light is different in different substances ... air, water, glass, jello, etc.
Turn your light off then on, how long time does it takes. There you got the speed of light !!!! 300,000 km a sec is fast.
oh Galilieo
You divide the speed of light in a vacuum (about 300,000,000 meters/second) by the index of refraction, "n".
Nobody has ever traveled at the speed of light, and I can promise you that nobody ever will.
Nothing has ever gone faster than the speed of light.
Nothing has ever been manufactured that could move anywhwere near the speed of light, and according to the best current science, nothing in nature can ever move faster than the speed of light.
The speed of light IN A VACUUM is always the same. In substances other than the vacuum, the speed of light is usually slower than in a vacuum.
The same as it ever was-The Speed of Light
The speed of light is different in different substances ... air, water, glass, jello, etc.
Yes it is..Therotically no object can move in the speed of light.But now scientists are trying to find the conditions for which a particle can move in the speed of light. No, anything massless can (and must!) move at c. No object carrying mass can ever move at c.
Nothing can travel at the speed of light, only light itself, the closest we have ever gotten to the speed of light is 99.9 %, we have accelerated particles at very very close to the speed of light using the LHC (Large Hadron Collider). The only thing that can go faster than the speed of light, is Space.
I'm afraid nothing happens to the speed of light ever. Also "air" is consider'd a gas.
Tachyon is the fastest thing ever because its slowest velocity is the speed of light! Light is the fastest thing that can be seen.
Turn your light off then on, how long time does it takes. There you got the speed of light !!!! 300,000 km a sec is fast.
None. No astronaut or man-made object has ever gotten close to the speed of light. It is impossible for an object to actually travel at the speed of light.