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Encyclopedia Britannica - Main :: GAG-GEO |
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GEISSLER, HEINRICH (1814-1879) , German physicist, was born at the village
Meiningen
Bonn
Julius
Plucker , in 1852, he ascertained the maximum density of water to be at 3.8 C. He also determined the coefficient of expansion for ice between -24 and -7, and for water freezing at o. In 1869, in con-junction with H. P. J. Vogelsang, he proved the existence of liquid carbon dioxide in cavities in quartz and topaz
ordinary phosphorus by means of the electric current. He is best known as the inventor of the sealed glass tubes which bear his name, by means of which are exhibited the phenomena accompanying the discharge of electricity through highly rarefied vapours and gases. Among other apparatus contrived by him were a vaporimeter, mercury air-pump, balances, normal thermometer, and areometer. From the university of Bonn
jubilee
doctor
See A. W. Hofmann, Der. d. deut. chem. Ges. p. 148 (1879). End of Article: GEISSLER, HEINRICH (1814-1879) If you wish, you can link directly to this article.
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