Since light travels faster than sound, is that why some people appear bright until your hear them speak?
A Photon was going through airport security. The airport security asked the photon. “Where’s your carry-on luggage?”
Photon said, "Oh I don’t have any. I am TRAVELLING LIGHT."
Albert Einstein created the concept of stimulated emission of radiation to become LASER. His brother, Frank, however, created a monster.
We know the speed of light but what's the speed of dark?
The only thing that travels faster than light is...
A blue laser hertz twice as much as a red laser.