degaussing
Sign in to saveAlso known as demagnetising, demagnetizing, demagnetisation, demagnetization, N-pole up-field induction, hysteresis loop reduction, magnetic signature neutralization, magneto-mechanical interaction
Degaussing, or deperming, is the process of decreasing or eliminating a remnant magnetic field. It is named after the gauss, a unit of magnetism, which in turn was named after Carl Friedrich Gauss. Due to magnetic hysteresis, it is generally not possible to reduce a magnetic field completely to zero, so degaussing typically induces a very small "known" field referred to as bias. Degaussing was originally applied to reduce ships' magnetic signatures during World War II. Degaussing is also used to reduce magnetic fields in tape recorders and cathode-ray tube displays, and to destroy data held on
~17 min read
Article
16 sectionsContents
- Ships' hulls
- Degaussing range
- High-temperature superconductivity
- Early experiments
- Color cathode-ray tubes
- Magnetic data storage media
- Irreversible damage to some media types
- Tape recorders
- Types of degaussers
- Electromagnetic degaussers
- Rotating coil degausser
- Pulse degaussing
- Permanent magnet degausser
- See also
- References
- External links
Degaussing, or deperming, is the process of decreasing or eliminating a remnant magnetic field. It is named after the gauss, a unit of magnetism, which in turn was named after Carl Friedrich Gauss. Due to magnetic hysteresis, it is generally not possible to reduce a magnetic field completely to zero, so degaussing typically induces a very small "known" field referred to as bias. Degaussing was originally applied to reduce ships' magnetic signatures during World War II. Degaussing is also used to reduce magnetic fields in tape recorders and cathode-ray tube displays, and to destroy data held on magnetic storage.
==Ships' hulls==