Barometric light — is a name for the light that is emitted by a mercury filled barometer tube when the tube is shaken. The discovery of this phenomenon in 1675 revealed the possibility of electric lighting. The phenomenon and its explanation The earliest barometers … Wikipedia
Gas-discharge lamp — See also: Gas filled tube Germicidal lamps are simple low pressure mercury vapor discharges in a fused quartz envelope. Gas discharge lamps are a family of artificial light sources that generate light by sending an electrical discharge through an … Wikipedia
Jean Picard — Infobox Scientist name = Jean Picard box width = image width =150px caption = Jean Felix Picard (1620–1682) birth date = July 21, 1620 birth place = La Flèche death date = July 12, 1682 death place = residence = citizenship = nationality = French … Wikipedia
Picard, Jean — ▪ French astronomer born , July 21, 1620, La Flèche, Fr. died July 12, 1682, Paris French astronomer who first accurately measured the length of a degree of a meridian (longitude line) and from that computed the size of the Earth.… … Universalium
Jean Picard — Jean Felix Picard (1620 1682) Jean Felix Picard (* 21. Juli 1620 in La Flèche; † 12. Juli 1682 in Paris) war Priester und Astronom. Picard bestimmte 1669 als Erster die Länge eines Grades eines Meridianbogens und damit die Größe der Erde mit… … Deutsch Wikipedia
Automated airport weather station — Automated airport weather stations are automated sensor suites which are designed to serve aviation and meteorological observing needs for safe and efficient aviation operations and weather forecasting. Automated airport weather stations have… … Wikipedia
GEOGRAPHICAL SURVEY — Names The name Ereẓ Israel (the Land of Israel) designates the land which, according to the Bible was promised as an inheritance to the Israelite tribes. In the course of time it came to be regarded first by the Jews and then also by the… … Encyclopedia of Judaism
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
Pendulum — This article is about pendulums. For other uses, see Pendulum (disambiguation). Simple gravity pendulum model assumes no friction or air resistance … Wikipedia
Little Boy — Infobox Weapon name= Little Boy caption= A post war Little Boy model. origin= United States type= Nuclear weapon is explosive=yes designer= design date= manufacturer= unit cost= production date= number= weight= 8,818.49 lbs. 4,000 kg length= 9.84 … Wikipedia
