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Johann Jacob Baeyer (born 5 November 1794 in 
Berlin
Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...
, died 10 September 1885 in Berlin) was a German geodesist and a lieutenant-general
Lieutenant general (Lt Gen, LTG and similar) is a military rank used in many countries. The rank traces its origins to the Middle Ages, where the title of lieutenant general was held by the second-in-command on the battlefield, who was normall ...
in the Royal Prussian Army. He was the first director of the Royal Prussian Geodetic Institute and is regarded as the founder of the International Association of Geodesy. He was the father of the Nobel Prize–winning chemist Adolf von Baeyer
Johann Friedrich Wilhelm Adolf von Baeyer (; 31 October 1835 – 20 August 1917) was a German chemist who synthesised indigo dye, indigo and developed a Von Baeyer nomenclature, nomenclature for cyclic compounds (that was subsequently extended a ...
. Baeyer was a Lutheran.
See also
* History of the metre *Seconds pendulum
A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequency of 0.5 Hz.
Principles
A pendulum is a weight suspended from a pivot so tha ...
References