Georg Ohm
Georg Ohm was a German physicist famous for Ohm’s Law. He worked on electric currents and acoustics. The unit of electrical resistance was named after him.
Georg Simon Ohm (16 March 1789 – 6 July 1854) was a German physicist. He began his research as a high school teacher, used an electrochemical cell invented by Italian Count Alessandro Volta that time. A highly methodical experimenter, Ohm also availed his own created equipment to determine that there is a direct proportion between the potential difference (voltage) applied across a conductor and the resultant electric current. This relationship is known as Ohm’s law, an empirical law (found by experiment), which he formulated in 1827.
Ohm was appointed professor at Munich to honour his discovery of the law (Ohm’s Law), that relates to electrical current intensity, electromotive force, and circuit resistance. He also taught in Cologne, Berlin, and Nuremberg.
Ohm’s Law in mathematical equation states that if:
V —> is voltage in volts across a conductor
I —>is the current in amps through the conductor
R —> is the resistance of the conductor in ohms
then V = IR.
Or, it takes 1 volt (voltage) to push 1 amp (current) through a resistance of 1 ohm (conductor resistance). Ohm’s name is acknowledged in the unit of electrical resistance in relation to voltage and current.
References:
- Ellyard, David. Who Discovered What When. Sydney: New Holland Publishers, 2005.
- Oxford Dictionary of Physics, 5th Edition. OUP, 2005.
Image Credit: Georg Ohm’s, in Public Domain.
