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Curie point

Curie point   Quick reference

A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
37 words

...Curie point ( Curie temperature ) The temperature at which a ferromagnetic substance loses its ferromagnetism and becomes only paramagnetic. For iron the Curie point is 760°C and for nickel 356°C. It is named after Pierre Curie...

Curie’s law

Curie’s law   Quick reference

A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
89 words

...Curie’s law The susceptibility ( χ ‎) of a paramagnetic substance is proportional to the thermodynamic temperature ( T ), i.e. χ ‎= C / T , where C is the Curie constant. A modification of this law, the Curie–Weiss law , is more generally applicable. It states that χ ‎= C /( T − θ ‎), where θ ‎ is the Weiss constant, a characteristic of the material. The law was first proposed by Pierre Curie in 1895 and modified by another French physicist, Pierre-Ernest Weiss ( 1865–1940 ), in...

Joliot-Curie, Irène

Joliot-Curie, Irène (1897–1956)   Quick reference

A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
63 words

...Joliot-Curie, Irène ( 1897–1956 ) French physicist , daughter of Marie and Pierre Curie , who was educated by her mother and her scientist associates. In 1921 she began work at the Radium Institute, becoming director in 1946 . In 1926 she married Frédéric Joliot ( 1900–58 ). They shared the 1935 Nobel Prize for chemistry for their discovery of artificial radioactivity the previous...

Curie, Marie

Curie, Marie (1867–1934)   Quick reference

A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
116 words

...Curie, Marie ( Marya Sklodowska ; 1867–1934 ) Polish -born French chemist , who went to Paris in 1891 . She married the physicist Pierre Curie ( 1859–1906 ) in 1895 and soon began work on seeking radioactive elements other than uranium in pitchblende (to account for its unexpectedly high radioactivity). By 1898 she had discovered radium and polonium , although it took her four years to purify them. In 1903 the Curies shared the Nobel Prize for physics with Henri Becquerel , who had discovered radioactivity. In 1911 she was awarded the...

Becquerel, Antoine Henri

Becquerel, Antoine Henri (1852–1908)   Quick reference

A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
64 words

...in 1896 , he accidentally discovered radioactivity in fluorescent salts of uranium. Three years later he showed that it consists of charged particles that are deflected by a magnetic field. For this work he was awarded the 1903 Nobel Prize, which he shared with Pierre and Marie Curie...

curium

curium   Quick reference

A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
79 words

...1340±40°C. There are nine known isotopes. The element was first identified by Glenn Theodore Seaborg ( 1912–99 ) and associates in 1944 and first produced by L. B. Werner and I. Perlman in 1947 by bombarding americium–241 with neutrons. It is named after Marie and Pierre Curie...

radium

radium   Quick reference

A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
76 words

...in uranium ores (e.g. pitchblende). The most stable isotope is radium–226 (half-life 1602 years), which decays to radon. It is used as a radioactive source in research and, to some extent, in radiotherapy. The element was isolated from pitchblende in 1898 by Marie and Pierre Curie...

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