Since the distance between the Zeeman sub-levels is a function of the magnetic field, this effect can be used to measure the magnetic field, e.g. that of the Sun and other stars or in laboratory plasmas.
Charley horse: Slang for a cramp in a muscle in the leg, usually caused by a strain or injury. A charley horse can last anywhere from a few seconds to over a quarter of an hour. It is not uncommon for one to recur before it finally resolves.
The âCharlieâ Horse in the game âOperationâ (Source). Definition: A charley horse is the nickname given to a cramp or pulled muscle in the leg. The strong muscle cramp can sneak up suddenly and last for a few seconds to several painful minutes.