GEORG SIMON OHM (1789 - 1854)
Resistance is the property of a substance in an electrical circuit to oppose the flow of electric current. The SI unit of electrical resistance is named after Georg Simon Ohm. It is Ohm. Ohm is the resistance which allows a current of one ampere to flow under a potential difference of one volt. A law propounded by Ohm states that the current flowing through an electric circuit is equal to the ration of voltage to the resistance.
Voltage V
I = current = _________ = ___
Resistance R
Georg Simon Ohm was born on 16 March, 1787. His father was a Blacksmith. Ohm became a teacher at the age of 18. He obtained doctorate degree in mathematics in 1811. He wished to join army to fight against Napolean. But his father adviced him to continue teaching profession. He was the professor at the age 30 in Cologue. Ohm published his research paper on electricity in 1827. He also published a book titled mathematical measurements of electric currents. But he was ignored. The people who read his book criticized telling that Ohm’s contribution to science or mathematics is nothing. There were arguments. Ohm resigned his post. He had to live on private tuitions there after. It was only after six years he could enter university again. He was not recognized in Germany. Britain welcomed his theory. The Royal society of London honoured him giving kople medal.
Ohm died in 1854 in Munich. In 1881, the international conference of electrical engineers was held in Paris and it was decided there to call unit of electrical reistance in honour of the scientist as OHM. But it was only after his death. The relation V = IR has brought Italy, France and Germany together.
Voltage V
I = current = _________ = ___
Resistance R
Georg Simon Ohm was born on 16 March, 1787. His father was a Blacksmith. Ohm became a teacher at the age of 18. He obtained doctorate degree in mathematics in 1811. He wished to join army to fight against Napolean. But his father adviced him to continue teaching profession. He was the professor at the age 30 in Cologue. Ohm published his research paper on electricity in 1827. He also published a book titled mathematical measurements of electric currents. But he was ignored. The people who read his book criticized telling that Ohm’s contribution to science or mathematics is nothing. There were arguments. Ohm resigned his post. He had to live on private tuitions there after. It was only after six years he could enter university again. He was not recognized in Germany. Britain welcomed his theory. The Royal society of London honoured him giving kople medal.
Ohm died in 1854 in Munich. In 1881, the international conference of electrical engineers was held in Paris and it was decided there to call unit of electrical reistance in honour of the scientist as OHM. But it was only after his death. The relation V = IR has brought Italy, France and Germany together.
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