Johannes Bosscha

Johannes Bosscha.

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

Bosscha studied natural sciences in Deventer and Leiden and received his doctorate in Leiden in 1854 with a thesis on galvanometry . In 1857 he became an assistant at the natural science cabinet in Leiden, and in 1860 a teacher at the Military Academy in Breda. 1863 he was made inspector of schools, and in 1872 he became a teacher at the Polytechnic School at Delft ; In 1878 he became director of this institution.

Bosscha published numerous papers in Dutch, some of which were also published as a German translation in the Annalen der Physik von Poggendorff . As the successor to David Bierens de Haan, he was editor of the works of Christiaan Huygens .

Among other things, Bosscha dealt with the determination of the speed of sound over short distances, the expansion coefficient of mercury , the cause of galvanic polarization , the heat equivalent , the measurement of the electromotive force and the mechanical theory of electrolysis . He earned important services in telecommunications , called telegraphy at the time . In 1855 he demonstrated the possibility of simultaneous counter- speaking ( intercom ) and double speech on a single wire . He also constructed corresponding apparatus.

In 1863 he was elected a member of the Royal Netherlands Academy of Sciences (KNAW). From 1910 he was a corresponding member of the Académie des sciences .

literature

• Joseph W. Dauben , Christoph J. Scriba (eds.): Writing the history of mathematics , Birkhäuser 2002, p. 376

Individual evidence

1. ^ Past Members: Johannes Bosscha (3). KNAW, accessed September 24, 2019 . 
2. ^ List of members since 1666: Letter B. Académie des sciences, accessed on September 24, 2019 (French).