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Electromagnetic oscillograph : ウィキペディア英語版 | Electromagnetic oscillograph
An electromagnetic oscillograph is an oscillograph which measures variations of electric current by having it go through a magnetic coil. Variations in current induce momentum in the coil, which can be directly measured. The electromagnetic oscillograph was invented by William Duddell. Some models utilise a mirror which reflects a beam of light, allowing measurement of minute movements of the coil. Other were fitted with a hand, possibly fitted with a pen to record values. == External links ==
* (William du Bois Duddell ) * (Electromagnetic oscillograph )
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Electromagnetic oscillograph」の詳細全文を読む
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