Not to be confused with Johannes Forchhammer, his father, or Johan Georg Forchhammer, his grandfather.
Georg Forchhammer
Forchhammer in 1910
Born
Johannes Georg Forchhammer
(1861-05-22)22 May 1861
Aalborg, North Jutland County, Denmark
Died
23 July 1938(1938-07-23) (aged 77)
Ordrup, Copenhagen County, Denmark
Alma mater
University of Copenhagen
Occupation
Deaf educator
Spouse
Karen Marie Groth
(m. 1888; died 1920)
Children
1
Parent
Johannes Forchhammer (father)
Relatives
Forchhammer family [da]
Johannes Georg Forchhammer (22 May 1861 – 23 July 1938) was a Danish educator of the deaf, who was director of several deaf schools in Nyborg and Fredericia from 1891 to 1926. Born to a family of academics, in Aalborg, first training as a chemist, he taught physics for several years before starting work as a deaf educator. Forchhammer developed one of the first mouth–hand systems, an approach to manually coded languages, which he used to teach the Danish language to deaf students; his system was used through the twentieth century, and was later adapted to teach German. The system used a series of handshapes under the chin to show the sounds of speech as one spoke, giving the observer extra information about pronunciation.
Forchhammer conducted research in linguistics, and created a theory of vocal intensity. He was inventor of the phonoscope, a device whichwas used to demonstrate to deaf students whether the vowel they were making was correct using a gas flame and rotating drum. In 1903, he completed a doctorate degree on the subject of deaf communication, and was a supporter of various constructed languages, running a society for one, Ido, in Copenhagen. Forchhammer had one son, Eiler, who also became an educator of the deaf.
Johannes GeorgForchhammer (22 May 1861 – 23 July 1938) was a Danish educator of the deaf, who was director of several deaf schools in Nyborg and Fredericia...
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Johan GeorgForchhammer, and through him an uncle of Johannes Nicolai GeorgForchhammer and granduncle of Henni and Johannes GeorgForchhammer. He studied...
major ions were in a fixed ratio, confirming the hypothesis of Johan GeorgForchhammer, that is now known as the Principle of Constant Proportions. However...
Systems" (MHS). An early example was developed in Denmark in 1903 by GeorgForchhammer. Others include the Assisted Kinemes Alphabet (Belgium) and a Persian...
Nicollet, French mathematician and explorer (d. 1843) 1794 – Johan GeorgForchhammer, Danish mineralogist and geologist (d. 1865) 1802 – Alexandre Dumas...
"Fish Clay". It was given this name by the Danish geologist Johan GeorgForchhammer in 1825, as it contained scales and teeth from fish, but few other...
Bach Johan GeorgForchhammer (1794–1865), mineralogist and geologist Peter Wilhelm Forchhammer (1801–1894), classical archaeologist. Georg Beseler (1809–1888)...
geological and artistic expertise, including the geologist Johan GeorgForchhammer. At first, Finnur was unable to read the signs, but resolving to read...
(1841–1885) Gustaf Flink (1848–1931) David Forbes (1828–1876) Johan GeorgForchhammer (1794–1865) Adolarius Jacob Forster (1739–1806) Westgarth Forster...
Baron Farrer John Fiske Robert FitzRoy Auguste-Henri Forel Johan GeorgForchhammer Francis Galton* Jean Albert Gaudry James Geikie Joseph Henry Gilbert...
Albert, Prince Consort of the United Kingdom (b. 1819) 1865 – Johan GeorgForchhammer, Danish geologist and mineralogist (b. 1794) 1873 – Louis Agassiz...
December 10 – King Leopold I of Belgium (b. 1790) December 14 – Johan GeorgForchhammer, Danish geologist (b. 1794) December 17 – Luigi Ciacchi, Italian cardinal...
Constant Proportions, a theory first conjectured in 1865 by Johan GeorgForchhammer regarding the major ions of sea-water: that whilst salinity varied...
Meza, commander of the Danish Army (born 1792) 14 December – Johan GeorgForchhammer, mineralogist and geologist (born 1794) "Christian IX | king of Denmark"...
Christian VIII's kingdom, the boulder was analysed by the geologist Johan GeorgForchhammer, who suggested to excavate around it in order to determine its size...
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