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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...

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...

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...

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