John Henry Holmes (1857 – 1935) was an English electrical engineer, inventor, Quaker and pioneer of electric lighting who invented the quick break light switch, the technology behind which remains the basis for modern wall mounted light switches.  Career [ edit] A 200 HP J.H. Holmes & Co Large "Castle" Dynamo
- J. H. Holmes & Co.
- Developing technology behind the modern light switch
- Electrical Engineer, Inventor
John Henry Holmes (1866 – 1934) was born in Devon and served as a missionary with the London Missionary Society at three stations in the Papuan (New Guinea) Gulf from 1893 – 1917: among the Elema people at Jokea and Orokolo, and from 1905 amongst the Purari peoples. Initially critical of aspects of Papuan culture, a transformation in Holmes ...
John Henry Holmes (1857 - 1935) war ein englischer Elektrotechniker, Erfinder, Quäker und Pionier der elektrischen Beleuchtung, die die kurze Pause Lichtschalter erfunden, die Technologie hinter dem bleibt die Grundlage für diemoderne Wandlichtschalter. Werdegang Ein 200 PS großer "Castle" -Dynamo von JH Holmes amp; Co.
- Elektroingenieur, Erfinder
18. Juli 2020 · That man was John Henry Holmes, an engineer, Quaker and inventor. Holmes was born in Newcastle on 6 June 1857 and grew up first of all in Gateshead and then in Jesmond. His father was a ‘paint and color manufacturer, glass and oil merchant’ with his own factory.
Onward development of Henry's work in U.S.S.R created a magnetic switch [invented in 1922] in a glass vial by the Russian Professor V. Kovalenkov and became what is known as the Reed Switch [refined 16 years later by Bell Telephone Laboratories ].
John Henry Holmes (1857 – 1935) war ein englischer Elektroingenieur, Erfinder, Quäker und Pionier der elektrischen Beleuchtung, der den Schnelltrennlichtschalter erfand, dessen Technologie die Grundlage für moderne wandmontierte Lichtschalter bleibt . Werdegang Ein 200 PS großer JH Holmes & Co "Castle" Dynamo
JOHN HENRY HOLMES, who died on April 19, was born on June 19, 1866. Having been ordained in 1893, he was appointed by the London Missionary Society at first to the Fly River District, Papua, and...