Fraunhofer may refer to:
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Joseph von Fraunhofer
Joseph Ritter von Fraunhofer (; ; 6 March 1787 – 7 June 1826) was a German physicist and optical lens manufacturer. He made optical glass, an achromatic telescope, and objective lenses. He developed diffraction grating and also invented the ...
(1787–1826), German physicist
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Fraunhofer (crater)
Fraunhofer is a lunar impact crater that is located just to the south-southwest of the walled plain Furnerius, in the southeastern part of the Moon. This crater appears foreshortened when viewed from the Earth, and is actually nearly circular.
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, a lunar crater
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Fraunhofer Society
The Fraunhofer Society () is a German publicly-owned research organization with 76institutes spread throughout Germany, each focusing on different fields of applied science (as opposed to the Max Planck Society, which works primarily on Basic re ...
(Fraunhofer-Gesellschaft), a large German research organization
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Fraunhofer diffraction
In optics, the Fraunhofer diffraction equation is used to model the diffraction of waves when plane waves are incident on a diffracting object, and the diffraction pattern is viewed at a sufficiently long distance (a distance satisfying Fraunhofer ...
, far-field diffraction
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Fraunhofer lines
The Fraunhofer lines are a set of spectral absorption lines. They are dark absorption lines, seen in the optical spectrum of the Sun, and are formed when atoms in the solar atmosphere absorb light being emitted by the solar photosphere. The l ...
, spectral lines of the Sun
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Fraunhofer distance
The Fraunhofer distance, named after Joseph von Fraunhofer, is the value of:
:d = ,
where D is the largest dimension of the radiator (in the case of a magnetic loop antenna, the diameter) and is the wavelength of the radio wave. This distance pro ...
, between near field and far field
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