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I have chosen Georg Simon Ohm as I seem to use his discovery of electrical resistance pretty often in my military life.  Mr. Ohms was a German scientist did the majority of his work on resistance between 1825 and 1826. His law states that the current through a conductor is directly proportional to the potential difference (voltage) and inversely proportional to the resistance. We now use OHM as a unit of measure when discussing electrical resistance.

I have used this law in troubleshooting of electrical components and systems for about 15 years. During troubleshooting, I try and isolate the fault. There are three main components to every system; source, path, and destination. If the source is verified as operational the next step is to check the path. I do this by ensuring that there is actually an unobstructed path for a signal or voltage to travel. We call it “ohming out” a cable. Essentially we make sure that there is not a break in the cable causing resistance. This is a critical step in my troubleshooting procedure that could not be made possible without the observation of Georg Ohm.

Besides me using Ohm’s law for simple troubleshooting it is used in electrical engineering to calculate that circuits are safe in the design process and if he did not notice the electrical relationship between electrical current, electromotive force, and resistance, analysis, and design of electrical circuits would be a difficult task to complete. It’s a very simple law by one that still has its place in electrical power even today.

El-Sharkawi, M. A. (2012). Electric energy: An introduction (3rd ed.). Boca Raton, FL: CRC Press.

Ohm’s Law. (2015, December 20). Retrieved March 12, 2019, from http://purehistory.org/ohms-law/ (Links to an external site.)Links to an external site.

Britannica, T. E. (2018, July 03). Georg Ohm. Retrieved March 12, 2019, from https://www.britannica.com/biography/Georg-Ohm