Johannes Georg Forchhammer (22 May 1861 – 1938) was a Danish physicist and educator.

He was born in Aalborg

Aalborg

-Transport:On the north side of the Limfjord is Nørresundby, which is connected to Aalborg by a road bridge Limfjordsbroen, an iron railway bridge Jernbanebroen over Limfjorden, as well as a motorway tunnel running under the Limfjord Limfjordstunnelen....

 as a son of Johannes Nicolai Georg Forchhammer

Johannes Nicolai Georg Forchhammer

Johannes Nicolai Georg Forchhammer was a Danish philologist.He was born in Copenhagen as a son of Johan Georg Forchhammer. He was a nephew of August Friedrich Wilhelm Forchhammer. He finished his secondary education in 1843, and completed the cand.philol. degree in 1848. He took the magistratus...

. He was a brother of teacher Henni Forchhammer

Henni Forchhammer

Henriette "Henni" Forchhammer was a Danish educator and women's rights activist.She was a daughter of Johannes Nicolai Georg Forchhammer, a sister of physicist and educator Johannes Georg Forchhammer and singer Viggo Forchhammer and aunt of theatre director Bjarne Forchhammer...

 and singer Viggo Forchhammer and uncle of theatre director Bjarne Forchhammer

Bjarne Forchhammer

Bjarne Forchhammer was a Danish film actor. He appeared in 25 films between 1933 and 1968.He was born in Germany and died in Denmark.-Filmography:* Kongen bød * Barnet * Vagabonden...

. He was a grandson of Johan Georg Forchhammer

Johan Georg Forchhammer

Johan Georg Forchhammer was a Danish mineralogist and geologist.Forchhammer was born at Husum, Schleswig. After studying at the universities of Kiel and Copenhagen from 1815 to 1818, he joined Hans Christian Ørsted and Lauritz Esmarch in their mineralogical exploration of Bornholm, and took a...

 and grandnephew of August Friedrich Wilhelm Forchhammer

August Friedrich Wilhelm Forchhammer

August Friedrich Wilhelm Forchhammer was a jurist and historian from the Duchy of Schleswig.He was born in Husum...

.

He finished his secondary education at Herlufsholm School in 1880, and took the polytechnical examination in chemistry in 1885. He was an assistant at the Carlsberg Laboratory

Carlsberg Laboratory

The Carlsberg Laboratory in Copenhagen, Denmark was created in 1875 by J. C. Jacobsen, the founder of the Carlsberg brewery, for the sake of advancing biochemical knowledge, especially relating to brewing. It featured a Department of Chemistry and a Department of Physiology...

 from 1885 to 1886, and from 1886 to 1891 he taught at the Metropolitan School and the Royal Danish Naval Academy

Royal Danish Naval Academy

The Royal Danish Naval Academy educates and commissions all officers for the Royal Danish Navy...

. On 1 April 1891 he became manager of the school for deaf-mute people in Nyborg

Nyborg

Nyborg is a city in central Denmark, located in Nyborg Municipality on the island of Funen and with a population of 16,492 . Nyborg is one of the 14 large municipalities created on 1 January 2007...

. School textbooks written by Forchhammer include Mekanisk Fysik (1888) and Astronomi (1889) together with Julius Petersen. He took the dr.philos. degree in 1903 with the thesis

Thesis

A dissertation or thesis is a document submitted in support of candidature for an academic degree or professional qualification presenting the author's research and findings...

 Om nødvendigheden af sikre meddelelsesmidler i døvstummeundervisningen. From 1909 to 1926 he headed the Royal Institute for the deaf-mute in Fredericia

Fredericia

Fredericia is a town located in Fredericia municipality in the eastern part of the Jutland peninsula in Denmark, in a sub-region known locally as Trekanten, or The Triangle...

. He died in 1938.