Light

Speed of light my butt

So a metre(er) is defined as the length that light travels in 1/299792458 of a second… Which is pretty stupid, since we don’t even know if light is constant..

So in the flashlight scenario [flashlight moving backwards at c, light shining back, and apparently (according to the theory of relativity) it would be moving at light speed to something that was stationary and not moving], the light would have to travel twice light speed to get there.

… And since the meter is defined by the speed of light, the actual speed that the light is traveling in m/s, would always be the speed of light, when used the “meter” as a measuring unit. Maybe that’s what Einstein meant?

So instead we should use feet per second! that, or redefine the meter… I vote the latter.

And!! Plus, when measuring the speed of light, we didn’t take into account the the rotation of the earth, or the revolution. and for that, we would need the exact location of where the speed of light was tested, to calculate the latitude, then the speed at that latitude that the earth was traveling.

EDIT: The speed of light was calculated in a vacuum, and when trying to calculate the difference with the directions of the earth’s movements, all measurements were the same.