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secchi disc

secchi disc A disc used in a simple method for measuring the transparency of water. The disc is 20 cm across and divided into alternate black and white quadrants. It is lowered into water on a line until the difference between the black and white areas just ceases to be visible, at which point the depth is recorded. The secchi disc provides a convenient method for comparing the transparency of water at different sites. The disc was invented by the Italian Jesuit and eminent astrophysicist Angelo Secchi (1818–78).

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"secchi disc." A Dictionary of Ecology. . Encyclopedia.com. 16 Aug. 2017 <http://www.encyclopedia.com>.

"secchi disc." A Dictionary of Ecology. . Encyclopedia.com. (August 16, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/secchi-disc-0

"secchi disc." A Dictionary of Ecology. . Retrieved August 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/secchi-disc-0

secchi disc

secchi disc A disc used in a simple method for measuring the transparency of water. The disc is 20 cm across, and divided into alternate black and white quadrants. It is lowered into water on a line until the difference between the black and white areas just ceases to be visible, at which point the depth is recorded. The secchi disc provides a convenient method for comparing the transparencies of water at different sites.

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"secchi disc." A Dictionary of Plant Sciences. . Encyclopedia.com. 16 Aug. 2017 <http://www.encyclopedia.com>.

"secchi disc." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 16, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/secchi-disc-1

"secchi disc." A Dictionary of Plant Sciences. . Retrieved August 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/secchi-disc-1

Secchi disc

Secchi disc A device used in a simple method for measuring the transparency of water. The disc is 20 cm across, and divided into alternate black and white quadrants. It is lowered into the water on a line until the difference between the black and white areas just ceases to be visible, and this depth is recorded. The Secchi disc provides a convenient method for comparing the transparencies of water at different times.

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"Secchi disc." A Dictionary of Earth Sciences. . Encyclopedia.com. 16 Aug. 2017 <http://www.encyclopedia.com>.

"Secchi disc." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 16, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/secchi-disc

"Secchi disc." A Dictionary of Earth Sciences. . Retrieved August 16, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/secchi-disc