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what is speed of light constant. Indeed until the late 1800s no one even considered the ideapeople thought that light behaved like everything else. If they managed to make light faster than the normal speed at which it travels what is used to fill c in emc2 simply means that they either removed or replaced a medium.
It is often stated that the speed of light is constant and that nothing can travel faster than the speed of light. There is no frame in which the light is standing still since as we started with its speed is constant. The speed of light is no ordinary speed however.
Light isnt traveling at a constant speed nor does sound.
By this point everyone knows that the speed of light is constant but it is not at all obvious why this should be or even what it means. I keep getting the right answer except that my scientific. Today the speed of light or c as its commonly known is considered the cornerstone of special relativity unlike space and time the speed of light is constant independent of the observer. So things like that dont exist.