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Pieter Zeeman was a Dutch physicist. He was born in 1865 and died in 1943. He discovered the splitting of the spectral lines of a substance when placed in a magnetic field (known as the Zeeman effect) in 1886 and shared the 1902 Nobel Prize with the Dutch physicist Hendrik Lorentz.
 Research Pieter Zeeman
The Stark Effect is the change produced by a strong electrostatic field in the spectrum emitted by a gas subjected to an electric discharge in a highly exhausted tube. The light emitted by the atoms of the gas is due to the motion of electrons and the motion of these is disturbed when they are subjected either to a magnetic field or to an electric field, the former case being that of the Zeeman effect. The Stark effect was discovered in 1913 by Stark.
Research Stark Effect
The Zeeman effect is the splitting of the lines in a spectrum when the source of the spectrum is exposed to a magnetic field. It was discovered in 1896 by P. Zeeman. In the normal Zeeman effect a single line is split into three if the field is perpendicular to the light path or two lines if the field is parallel to the light path. This effect can be explained by classical electromagnetic principles in terms of the speeding up and slowing down of orbital electrons in the source as a result of the applied field. The anomalous Zeeman effect is a complicated splitting of the lines into several closely spaced lines, so called because it does not agree with classical predictions. This effect is explained by quantum mechanics in terms of electron spin.
Research Zeeman Effect
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The Probert Encyclopaedia was designed, edited and programed by
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©1993 - 2009 The Probert Encyclopaedia
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