Johannes Bosscha

John Bosscha ( born November 18, 1831 in Breda, † April 15, 1911 in Heemstede ) was a Dutch physicist.

Bosscha studied in Deventer and suffering natural sciences and a doctorate in 1854 in Leiden with a thesis on the Galvanometrie. In 1857 he became Assistant to the scientific Cabinet in Leiden, in 1860 a teacher at the military academy at Breda. 1863 one made it to the inspector of schools and 1872, he became a teacher at the Polytechnic School at Delft, in 1878 he became the director of this institution.

Bosscha published numerous works in the Dutch language, some of which were also published in German translation in the annals of physics by Poggendorff.

Bosscha employed, inter alia, with the determination of the speed of sound over short distances, the coefficient of expansion of the mercury, the cause of galvanic polarization, with the calorimeter, the measurement of the electromotive force and the mechanical theory of electrolysis. Important achievements he gained in telecommunications, called at the time telegraphy. In 1855, he demonstrated the ability to transfer against award ( intercom ) and double talk at the same time on a single wire. He also constructed corresponding apparatus.

John Bosscha died on 15 April 1911 in Heemstede.

  • Physicist ( 20th century)
  • Member of the Royal Dutch Academy of Sciences
  • Netherlander
  • Born in 1831
  • Died in 1911
  • Man
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