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A pair of contact lenses, positioned with the concave side facing upward. Putting contacts in and taking them out. One-day disposable contact lenses with blue handling tint in blister-pack packaging. Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used ...
Drahoslav Lím (September 30, 1925, in Czechoslovakia – August 22, 2003, in San Diego, California) was a Czech chemist. He invented polyhydroxyethylmethacrylate, the synthetic material used for soft contact lenses .
Polarography was invented by Jaroslav Heyrovský in 1922. [ 6] Cabin motorcycle (Dálník) was invented by Jan Anderle during 1930s. [ 7][ 8] Versatile pencil was invented by Czech company Koh-i-Noor Hardtmuth in 1937. [ 9][ 10] Silon textile material (synthetic fiber) was invented by Otto Wichterle during the 1940s.
The history of the Czech lands – an area roughly corresponding to the present-day Czech Republic – starts approximately 800 years BCE. A simple chopper from that age was discovered at the Red Hill ( Czech: Červený kopec) archeological site in Brno. [1]
History of Czechoslovakia. With the collapse of the Austria-Hungary at the end of World War I, the independent country of Czechoslovakia [ 1] ( Czech, Slovak: Československo) was formed as a result of the critical intervention of U.S. President Woodrow Wilson, among others.
First workshop of Carl Zeiss in the center of Jena, c. 1847 Carl Zeiss Jena (1910) One of the Stasi's cameras with the special SO-3.5.1 (5/17mm) lens developed by Carl Zeiss, a so-called "needle eye lens", for shooting through keyholes or holes down to 1 mm in diameter 2 historical lenses of Carl Zeiss, Nr. 145077 and Nr. 145078, Tessar 1:4,5 F=5,5cm DRP 142294 (produced before 1910) Carl ...
Pentax is one of the few camera manufacturers still producing medium format cameras up to 1999. There are two offerings, one in the 6×7 format—the Pentax 67 II, and one in the 6×4.5 format—Pentax 645NII. Both use 120 or 220 roll film. These cameras build on the Pentax SLR design experience.
"Chronologies: Czechoslovakia: People's Republic 1943-1993". Austria-Hungary & the Successor States: A Reference Guide. Facts on File. ISBN 978-0-8160-7469-3. Harold B. Segel (2003). "Chronology of Major Political Events, 1944-2002: Czechoslovakia". Columbia Guide to the Literatures of Eastern Europe Since 1945. Columbia University Press.