Gainsucker
Lightspeed
The speed of light, usually denoted by c, is a physical constant important in many areas of physics. Light and all other electromagnetic radiation always travel at this speed in empty space (vacuum), regardless of the motion of the source or the inertial frame of the observer. Its value is exactly 299,792,458 metres per second[1] (approximately 186,282 miles per second).
Lightspeed
The speed of light, usually denoted by c, is a physical constant important in many areas of physics. Light and all other electromagnetic radiation always travel at this speed in empty space (vacuum), regardless of the motion of the source or the inertial frame of the observer. Its value is exactly 299,792,458 metres per second[1] (approximately 186,282 miles per second).