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barograph

(Encyclopedia)barograph, instrument used to make a continuous recording of atmospheric pressure. The pressure-sensitive element, a partially evacuated metal cylinder, is linked to a pen arm in such a way that the v...

S

(Encyclopedia)S, 19th letter of the alphabet, representing the common sibilant, voiceless in spur, voiced in rose. Its Greek equivalent is sigma. In former times the nonterminal s was written or printed much like a...

B

(Encyclopedia)B, second letter of the alphabet. Its Greek correspondent is named beta. It is a usual symbol for a voiced bilabial stop. In musical notation it is used to represent a note in the scale. In chemistry ...

V

(Encyclopedia)V, 22d letter of the alphabet (see U). It is a usual symbol for a voiced labiodental spirant, as in the English vat. In Roman numerals it corresponds to Arabic 5. In chemistry V is the symbol of the e...

Stürmer, Boris Vladimirovich

(Encyclopedia)Stürmer, Boris Vladimirovich bərēsˈ vlədyēˈmĭrəvĭch shtyo͞orˈmĭr [key], 1848–1917, Russian public official. He became premier early in 1916 and shortly afterward replaced Sazonov as for...

Meitner, Lise

(Encyclopedia)Meitner, Lise lēˈzə mītˈnər [key], 1878–1968, Austrian-Swedish physicist and mathematician. She was professor at the Univ. of Berlin (1926–33). A refugee from Germany after 1938, she became ...

nucleosynthesis

(Encyclopedia)nucleosynthesis or nucleogenesis, in astronomy, production of all the chemical elements from the simplest element, hydrogen, by thermonuclear reactions within stars, supernovas, and in the big bang at...

Ludwigshafen am Rhein

(Encyclopedia)Ludwigshafen am Rhein lo͞otˌvĭkhs-häˈfən äm rīn [key] or Ludwigshafen, city (1994 pop. 168,130), Rhineland Palatinate, W Germany, a port on the left bank of the Rhine River. It is connected by...

Fukui, Kenichi

(Encyclopedia)Fukui, Kenichi kĕnˈēchē fo͝oko͞oˈē, fo͝okˈo͞o-ē [key], 1918–98, Japanese chemist, b. Nara, Japan, Ph.D. Kyoto Univ., 1948. As a professor at Kyoto Univ., Fukui developed the theory that ...

silver nitrate

(Encyclopedia)silver nitrate nīˈtrāt [key], chemical compound, AgNO3, a colorless crystalline material that is very soluble in water. The most important compound of silver, it is used in the preparation of silve...