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radioactivity PDF Print E-mail
Thursday, 16 November 2006 01:00
A radioactivity is the spontaneous emission of matter or energy from the nucleus of an unstable atom (the emitted matter or energy is usually in the form of alpha or beta particles, gamma rays, or neutrons).

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Portrait of Marie Curie (1867-1934), Physicist

by Smithsonian Institution

Creator/Photographer: Transocean (Photographic company, Berlin) Medium: Medium unknown Date: Prior to 1934 Collection: Scientific Identity: Portraits from the Dibner Library of the History of Science and Technology - As a supplement to the Dibner Library for the History of Science and Technology's collection of written works by scientists, engineers, natural philosophers, and i . . .

Pierre Curie (1859-1906) and Marie Sklodowska Curie (1867-1934), c. 1903

by Smithsonian Institution

Creator: Science Service Subject: Curie, Marie 1867-1934        Curie, Pierre 1859-1906 Type: Black-and-white photographs Date: 1903 Topic: Nobel Prizes      Physics      Women scientists Local number: SIA Acc. 90-105 [SIA2008-0751] Summary: Pierre Curie (1859-1906) and Marie Sklodowska Curie (1867-1934) were jointly awarded the Nobel Prize for Physics in 19 . . .

Irène Joliot-Curie (1897-1956), c. 1935

by Smithsonian Institution

Creator: Science Service Subject: Joliot-Curie, Irène 1897-1956        Joliot-Curie, Frédéric Type: Black-and-white photographs Date: 1935 Topic: Physics      Women scientists      Nobel Prizes Local number: SIA Acc. 90-105 [SIA2008-4487] Summary: This photograph was distributed to the press when physicist Irène Joliot-Curie (1897-1956) was jointly a . . .

Herta R. Leng (1903-1997), 1940

by Smithsonian Institution

Creator: Science Service Subject: Leng, Herta R        Rensselaer Polytechnic Institute        Purdue University Type: Black-and-white photographs Date: 1940 Topic: Physics      Women scientists Local number: SIA Acc. 90-105 [SIA2008-5248] Summary: Austrian-born physicist Herta R. Leng (1903-1997) fled Austria in 1939 and eventually immigrated to t . . .
 

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