What a lovely shade of blue
Tue, 17/02/2009 - 11:40am | by Emyr
The speed of light is not absolute. This causes phenomena including refraction and Čerenkov radiation, which has tickled my fancy by producing a lovely shade of blue...
Čerenkov radiation is produced when some particle travels through an insulating medium faster than the speed of light through the same medium. This is achievable using equipment such as reactors or particle-accellerators, with media such as water where the speed of light is only about 3/4 or the speed of light in free space.
