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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

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. 10 Dec. 2018 <https://www.encyclopedia.com>.

"secchi disc." A Dictionary of Plant Sciences. . Encyclopedia.com. (December 10, 2018). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/secchi-disc-1

"secchi disc." A Dictionary of Plant Sciences. . Retrieved December 10, 2018 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/secchi-disc-1

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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. 10 Dec. 2018 <https://www.encyclopedia.com>.

"Secchi disc." A Dictionary of Earth Sciences. . Encyclopedia.com. (December 10, 2018). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/secchi-disc

"Secchi disc." A Dictionary of Earth Sciences. . Retrieved December 10, 2018 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/secchi-disc

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
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