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Cologne in Köln, North Rhine-Wetphalia, Germany — Central Europe
 

Georg Simon Ohm

 
 
Georg Simon Ohm Marker image. Click for full size.
Photographed by Andrew Ruppenstein, March 13, 2019
1. Georg Simon Ohm Marker
Inscription.  
Entdeckte in diesem Haus als
Lehrer am alten Kölnischen
Gymnasium im Jahre 1826
das Grundgesetz der
elekrischen Ströme.
Die Hansestadt Köln
weihte dem grossen Physiker
zum 16 Maerz 1939 seinem
150 Geburtstage diesem Tafel

-

(English translation:)

As an instructor at the old Cologne Preparatory School, Ohm discovered the basic law of electrical current in this building. The Hanseatic City of Cologne dedicates this plaque to the great physicist on the 150th anniversary of his birth.
 
Erected 1939 by Hansestadt Köln.
 
Topics. This historical marker is listed in this topic list: Science & Medicine. A significant historical year for this entry is 1826.
 
Location. 50° 56.595′ N, 6° 57.363′ E. Marker is in Cologne, Nordrhein-Westfalen (North Rhine-Wetphalia), in Köln. It is on Marzellenstrasse just north of An den Dominikanern, on the right when traveling north. Touch for map. Marker is at or near this postal address: Marzellenstrasse 32, Cologne HE 50668, Germany. Touch for directions.

Regionally, it is in Europe, the European Union, Atlantic Europe, Central Europe, the Schengen Area, Western Europe,
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and the Western World. Historically, it finds itself in what was once the Roman Empire and specifically also the Holy Roman Empire.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Dr. Friedrich Joseph Haass (a few steps from this marker); Matthias Joseph Scheeben (a few steps from this marker); Friedrich von Spee S.J. (within shouting distance of this marker); Kapelle St. Victor / St. Victor Chapel (about 90 meters away, measured in a direct line); Dominican Monastery Site and Albertus Magnus (about 150 meters away); Seitenportal des römischen Nordtores/ Side Portal of North Roman Gate (about 210 meters away); Model of the Finial (about 210 meters away); The Number 4711 (approx. 0.3 kilometers away). Touch for a list and map of all markers in Cologne.
 
Also see . . .  Georg Ohm (Wikipedia). "Georg Simon Ohm (16 March 1789 – 6 July 1854) was a German physicist and mathematician. As a school teacher, Ohm began his research with the new electrochemical cell, invented by Italian scientist Alessandro Volta. Using equipment of his own creation, Ohm found that there is a direct
Georg Simon Ohm Marker - wide view image. Click for full size.
Photographed by Andrew Ruppenstein, March 13, 2019
2. Georg Simon Ohm Marker - wide view
The marker is the rightmost of the of the series of four markers visible here on the wall of the Jesuit Gymnasium.
proportionality between the potential difference (voltage) applied across a conductor and the resultant electric current. This relationship is known as Ohm's law." (Submitted on March 18, 2019.) 
 
Additional keywords. Gedenktafel
 
 
Credits. This page was last revised on April 2, 2025. It was originally submitted on March 16, 2019, by Andrew Ruppenstein of Lamorinda, California. This page has been viewed 907 times since then and 63 times this year. Photos:   1, 2. submitted on March 18, 2019, by Andrew Ruppenstein of Lamorinda, California.
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Jul. 28, 2026