Secchi may refer to:
People with the surname
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Angelo Secchi
Angelo Secchi (; 28 June 1818 – 26 February 1878) was an Italian Catholic priest, astronomer from the Italian region of Emilia. He was director of the observatory at the Pontifical Gregorian University (then called the Roman College) for ...
, Italian astronomer
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Giuseppe Secchi (1931–2018), Italian footballer
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Luciano Secchi (born 1939), Italian comic book writer and publisher
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Luigi Secchi (1853-1921), Italian sculptor
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Marco Secchi, Italian photographer
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Serafino Secchi (died 1628), Italian clergyman
Other uses
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Secchi (lunar crater)
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Secchi (Martian crater)
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Secchi depth
The Secchi disk (or Secchi disc), as created in 1865 by Angelo Secchi, is a plain white, circular disk in diameter used to measure water transparency or turbidity in bodies of water. The disc is mounted on a pole or line, and lowered slowly down ...
, a measure of
turbidity
Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality.
Fluids ...
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Secchi disk
The Secchi disk (or Secchi disc), as created in 1865 by Angelo Secchi, is a plain white, circular disk in diameter used to measure water transparency or turbidity in bodies of water. The disc is mounted on a pole or line, and lowered slowly down ...
, an instrument used to measure turbidity
* SECCHI (Sun Earth Connection Coronal and Heliospheric Investigation), an instrument package on each of the
STEREO spacecraft
{{disambig, surname
Italian-language surnames