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.
Save. A charlie horse is a name given to severe muscle cramps in the legs or feet. The cramp often feels as if the muscles of the legs or feet spasm and then lock up in excruciating pain. Charlie horse cramps can occur anytime, but some people are more prone to get them at night.The most common area for a charlie horse is the calf muscle, but cramps can occur anywhere in your legs or feet.There are some changes you can make in your diet and lifestyle that may help prevent night cramps, and there are steps you can take to stop the pain of a charlie horse when it occurs.rink more water to help prevent charlie horse cramps. Dehydration has been implicated in the cause of leg and feet cramps. Most adults need at least 8 large glasses of liquid per day, usually more if you are active or live in a dry climate. This liquid should be mostly made up of water, juice or healthy sports drinks.