Technikatörténeti szemle 11. (1979)

TANULMÁNYOK - Vajda Pál: Creative Hungarians in mathematics, astronomy, physics, chemistry, technical sciences and industry. A selected bio-bibliography

BUDÓ, Ágoston (1914—1969). Physicist.

Ágoston Budó was one of the most significant theoreticians of the Scmid ( -*■ ) school. The first phase of his work is related to the spectra of diatomic molecules, another phase of his activity has to do with the behaviour of molecules in high-frequency electrical fields, whereas the third station of his scientific curriculum extended to the spectroscopy of luminescent materials.

Kovács I.: Á. Budó 1914—1969 (= Acta Phys. Ac. Sc. Hung. 28/1970. pp. 303—305.) HCD

BUZÁGH, Aladár (1885—1962). Chemist.

Buzágh improved Ostwald’s results in colloid chemistry research and established the Ostwald-Buzágh sedimentation rule, as well as the Ostwald-Buzágh continuity theory. He also elaborated a quantitative method for measuring adhesion.

Schay G.: Aladár Buzágh (= Acta Chim. Hung. 31/1962. p. 307.)

CH, WHC

DETRE, László (1906—1974). Astronomer.

His researches of the short-period alternating intensity (variable) stars (RR Lyrae) were of pioneering nature. He was member of the Directorial Board of the International Astronomical Union.

Bartha, L.: Dr. László Detre (= Sterne und Weltraum 12/1975. p. 83.)

ZAB

DIENES, Pál (1882—1957). Mathematician.

His significant results achieved in the theory of Taylor series were summed up in his book. He dealt further with differential geometry, matrix theory, mathematical logics and with the philosophical problems of mathematics.

Cooke R. G.: P. Dienes (= Nature Jun. 2. 1952.), Cooke R. G.: Paul Dienes (= Journal of the London Math. Soc. 35/1960. pp. 251—256.)

MBH, WHC

DOROGI, István (1885—1958). Chemical engineer.

Together with Lajos oDrogi he worked out between 1924—1934 the mechanized industrial production of proportioned shapely bodies by pneumatic principles. These bodies were formed from calendered sheet rubber and joined together by hammered seams. The process is described in 52 Hungarian basic patents and 150 foreign ones. The main principles of these standards — that have expired in the meantime — are widely used in modern rubber technology and in particular in the production of shaped bodies.

Hauser, E. A.: Handbuch der gesamten Kautschuktechnologie, Berlin 1935. tom. II., Schidrowitz, P.—Dawson, T. R. (ed.): History of the Rubber Industry, London 1952. X. p. 253.

DULOVITS, Jenő (1904—1972). Teacher, photo-artist.

He patented his entirely new camera type in 1943, which was then marketed by the Gamma-Optical Works (Budapest) from 1949 under the trade name DUFLEX. This was the world’s first 35 mm film single reflex camera with a pentaprism, presenting from eye level a laterally correct image, instant-return type reflex mirror and automatically operated diaphragm.

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