Becker, Papyri Schott-Reinhardt, i.
The invention of the mechanical air-pump is generally attributed to Otto von Guericke, consul of Magdeburg, who exhibited his instrument in 1654; it was first described in 1657 by Gaspar Schott, professor of mathematics at Wurttemberg, in his NI echanica hydraulico-pneumatica, and afterwards (in 1672) by Guericke in his Experimenta nova Magdeburgica de vacus spatia.
Schott at Jena in Germany.
On the other hand, while in the older crown and flint glasses the relation between refraction and dispersion had been practically fixed, dispersion and refraction increasing regularly with the density of the glass, in some of the new glasses introduced by Abbe and Schott this relation is altered and a relatively low refractive index is accompanied by a relatively high dispersion, while in others a high refractive index is associated with low dispersive power.
That Barbaro was really the first to apply the lens to the camera obscura is supported by Marius Bettinus in his Apiaria (1645), and by Kaspar Schott in his Magia Universalis (1657), the former taunting Porta with the appropriation.
Hevelius (Selenographia, 1647); Schott Magia Universalis Naturae et Artis, 1674); C. F.
Schott and E.
Schott gives the following as the result of measurements of transparency by means of a white disk at 23 stations in the open ocean, where quantitative observations of the plankton under i square metre of surface were made at the same time.
Some of these authors attempt to separate the physiognomical part of the subject (Chirognomia) from the astrological (Chiromantia); see especially Caspar Schott in Magia naturalis universalis, Bamberg, 1677.
Schott, p. 2, 1910).
These are of dense flint-glass (Schott 0.102), and each has a refracting angle of 63° 29'.
In general the system is well illustrated by the papyri forming the Schott-Reinhardt collection at Heidelberg (edited by C.H.
Schott, C. Schaffer and others, have published many systematic papers on Collembola, as has F.
Schott were crown FIG.
Schott, J, A.
Schott (1834), A.
Leon Feer, in Annales du Musee Gaimet (1881); Schott, Ueber den Buddhismus in Hoch-Asien; Gutzlaff, Geschichte des Chinesischen Reiches; Hue and Gabet, Souvenirs d'un voyage dans la Tartarie, le Tibet, et la Chine (Paris, 1858); Pallas's Sammlung historischer Nachrichten 'ether die Mongolischen Volkerschaften; Babu Sarat Chunder Das's " Contributions on the Religion and History of Tibet," in the Journal of the Bengal Asiatic Society, 1881; L.
The first collection is the German translation of tales heard by the Brothers Schott (1845).
Schott succeeded, however, in producing glasses which with a comparatively low refraction have a high dispersion, and with a high refraction a low dispersion.
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