Georg Ohm

Georg Ohm was born in Erlangen, Germany on March 16th, 1789. His father, a master mechanical engineer, taught him basic practical skills. While still young, Ohm’s ambition was to become a scientist and to work at one of the great German Universities. He studied at the University of Erlangen, and at the age of 24, he began teaching Physics and Mathematics at the Realschule in Bamberg. He remained there for almost four years before becoming a professor of Mathematics for the Jesuit’s college at Cologne in 1817.

Ohm’s main interest was current electricity, which had recently been advanced by Alessandro Volta’s invention of the battery. Ohm made only a modest living and as a result his experimental equipment was primitive. Despite this, he made his own metal wire, producing a range of thicknesses and lengths of remarkable consistent quality. The nine years he spent at the Jesuit’s college, he did considerable experimental research on the nature of electric circuits. He took considerable pains to be brutally accurate with every detail of his work.

In 1827, he was able to show from his experiments that there was a simple relationship between resistance, current and voltage. Ohm’s law stated that the amount of steady current through a material is directly proportional to the voltage across the material, for some fixed temperature. This is mathematically expressed as I=V/R. He had discovered the distribution of electromotive force in an electrical circuit, and had established a definite relationship connecting resistance, electromotive force and current strength. Ohm was afraid that the purely experimental basis of his work would undermine the importance of his discovery. He tried to state his law theoretically but his rambling mathematically proofs made him an object of ridicule.

In the years that followed, Ohm lived in poverty, tutoring privately in Berlin. He would receive no credit for his findings until he was made director of the Polytechnic School of Nuremburg in 1833. In 1841, the Royal Society in London recognized the significance of his discovery and awarded him the Copley medal. The following year, they admitted him as a member. In 1849, just 5 years before his death, Ohm’s lifelong dream was realized when he was given a professorship of Experimental Physics at the University of Munich. On July 7th,1854 he passed away in Munich, at the age of 65.

Ohm’s law

Ohm’s law is the mathematical relationship among electric current, resistance and voltage. The principle is named after the German scientist Georg Simon Ohm. Ohm demonstrated that there are no "perfect" electrical conductors through a series of experiments in 1825. Every conductor he tested offered some level of resistance. These experiments led to Ohm’s law. Ohm’s law of 1826 states that if the given temperature remains constant, the current flowing through certain conductors is proportional to the potential difference (voltage) across it. In other words, current equals voltage divided by resistance.

Ohm’s family

Georg Simon Ohm came from a protestant family. His father, Johann Wolfgang Ohm was a locksmith while his mother, Maria Elizabeth Beck, was the daughter of a tailor. They had seven children and only three survived, Georg, his brother Martin who went on to become a well-known mathematician, and his sister Elizabeth.

Ohm’s most important discovery

Ohm’s most important discovery was in 1826 when he discovered the mathematical law of electric current called "Ohm’s Law"

Some facts about Ohm

Georg Ohm has a crater on the moon named after him.

Ohm experimented with optics, acoustics, and the electrical conductivity of liquids, though he didn’t achieve any real progress in these fields.
For information on the history of the battery, see the following site!

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