Surface creepage

Japanese: 沿面放電 - えんめんほうでん(英語表記)surface creepage
Surface creepage
Corona discharge develops along the surface of an insulator. It is also called creeping corona discharge. An insulating plate is placed between a needle electrode and a flat electrode, and an AC or impulse voltage is applied to the plate. If a photographic plate is used as the insulating plate, discharge lines, or streamers, are imaged on the surface. These are called Lichtenberg figures. Research is also conducted using surface charge diagrams obtained by sprinkling a powder mixture of rosin and rosin on an insulating plate after the discharge.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
絶縁物の表面に沿って進展するコロナ放電。沿面コロナ放電ともいう。針状電極と平面電極との間に絶縁板をはさみ,交流またはインパルス電圧を加えて実験する。絶縁板として写真乾板を用いると,面上の放電線条,すなわちストリーマが写し出される。これをリヒテンベルクの図形という。また放電のあと,絶縁板上に松やにと光明丹の混合粉末を散布して得られる表面電荷図によっても研究は行われる。

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