When a ferromagnetic material of finite size is placed in a magnetic field and magnetized, a magnetic field in the opposite direction appears inside the material due to the magnetic poles created at both ends of the material as a result of the magnetization. The strength of the demagnetizing field Hd is proportional to the strength of magnetization M and can be written as Hd = NM / μ0 , where μ0 is the magnetic permeability of a vacuum and N is a proportionality constant called the demagnetizing factor. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
有限の大きさをもつ強磁性体を磁場中に入れて磁化するとき,磁化のためにその両端に生じた磁極によって強磁性体内に現れる逆向きの磁場。反磁場の強さ Hd は磁化の強さ M に比例し,Hd=NM/μ0 と書ける。 μ0 は真空の透磁率,N は反磁場係数と呼ばれる比例定数である。
出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報 |
A rocket-powered aircraft. It does not require air...
An isolated island in the Pacific Ocean, located i...
The transportation of live aquatic animals over l...
…Three species of sirens are found in the southea...
〘Noun〙 The five senses of sight, hearing, smell, t...
...Kipp's gas generator is also called Kipp...
Year of death: March 31, 1917 Year of birth: Tempo...
…Similar magazines include Kin no Fune (Golden Sh...
... Geostationary meteorological satellites were ...
A condition in which digestive ability is impaired...
…[Murata Gen]. … *Some of the terminology that me...
Jiuta utahon. Among the utahon from Osaka after th...
If a person who manages the affairs of another pe...
… [Definition] In a broad sense, it refers to all...
〘noun〙① A period of one year divided for the conve...