2007-01-18 08:52:02 · 6 answers · asked by Nigel 1 in Science & Mathematics ➔ Physics
in a vacuum it is absolute but it can be slowed by matter ( but even then it is an absolute - being the same under all conditions )
2007-01-18 08:57:20 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The speed of any particular beam of light is the same for all observers regardless of the medium (vacuum or otherwise).
In a vacuum, it is 3E6 km/sec. While light does slow in denser media, all observers will see that speed as the same.
2007-01-18 16:56:21 · answer #2 · answered by gebobs 6 · 0⤊ 0⤋
absolute. The Speed of light and all EM radiation is absolute.
2007-01-18 16:59:16 · answer #3 · answered by Anonymous · 0⤊ 0⤋
the speed of light in a vacuum is always the same no matter the conditions during the measurement. c is a constant.
2007-01-18 16:56:15 · answer #4 · answered by SteveA8 6 · 0⤊ 0⤋
It's absolute, and is the foundation of Einstien's Theory of Relativity because it's so counterintuitive.
2007-01-18 16:57:19 · answer #5 · answered by gamblin man 6 · 0⤊ 0⤋
in a vacum it is absolute it does not accelerate or decellrate, just ends when it runs out of energy, it is 299,792,458ms same as all em radation.
2007-01-18 17:39:42 · answer #6 · answered by Anonymous · 0⤊ 0⤋