Ohm, Georg Simon

Japanese: オーム（英語表記）Ohm, Georg Simon

Born: March 16, 1789 in Erlangen
Died July 6, 1854, Munich German physicist. Known for Ohm's law. In 1817 he became a professor of mathematics at the Jesuit College in Cologne, and in 1833 he became a professor at the Technical University of Nuremberg, before becoming a professor at the University of Munich in 1849. In recognition of his achievements, he was awarded the Copley Medal by the Royal Society in 1841, and became a foreign member the following year in 1842. The unit of electrical resistance, the ohm, is named after him. His main work is Die galvanische Kette, mathematisch bearbeitet (1827), a mathematical study of the galvanic circuit.

Ohms
ohm

The SI derived unit of electrical resistance. The symbol is Ω. When a voltage of 1V is applied between two points on a conductor, and the current flowing through the conductor is 1A, the electrical resistance between two points is 1Ω. The standard value of resistance was given using a cross capacitor, but since 1990 it has been realized based on the quantum Hall effect. The resistance of a ^1m3 cube of a material is called resistivity, and its unit is Ω·m. The unit is named after the GS ohm.

Ohms

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

Japanese:

[生]1789.3.16. エルランゲン
[没]1854.7.6. ミュンヘン
ドイツの物理学者。「オームの法則」で知られる。1817年ケルンのイエズス会カレッジの数学教授，1833年ニュルンベルク工業大学教授を経て 1849年ミュンヘン大学教授に就任。その業績が認められ，1841年にロイヤル・ソサエティからコプリー・メダルを贈られ，翌 1842年外国人会員。電気抵抗の単位「オーム」は彼の名にちなんでいる。主著『ガルバニ電流回路の数学的研究』Die galvanische Kette, mathematisch bearbeitet（1827）。

オーム
ohm

電気抵抗のSI組立単位。記号は Ω 。導体上の2点間に電圧 1V を与えたときに，導体中を流れる電流が 1A である場合の2点間の電気抵抗が1Ωである。抵抗の標準値はクロスキャパシターを用いて与えられていたが，1990年以降量子ホール効果に基づいて実現されることになった。物質の 1m³の立方体の抵抗を抵抗率と呼び，単位はΩ・mである。単位名は G.S.オームの名にちなむ。