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Sigma   /sˈɪgmə/   Listen
Sigma

noun
(pl. sigmas)
1.
The 18th letter of the Greek alphabet.





WordNet 3.0 © 2010 Princeton University


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"Sigma" Quotes from Famous Books



... and Chancery, for all one. He learned to frame his case from putting riddles and imitating Merlin's prophecies, and to set all the Cross Row together by the ears; yet his whole law is not able to decide Lucan's one old controversy betwixt Tau and Sigma. He accounts no man of his cap and coat idle, but who trots not the circuit. He affects no life or quality for itself, but for gain; and that, at least, to the stating him in a Justice of Peace-ship, ...
— Character Writings of the 17th Century • Various
... The radiation of a star is different for different wave-lengths ([lambda]). As regarding other mass phenomena we may therefore mention:—(1) the total radiation or intensity (I), (2) the mean wave-length ([lambda]0), (3) the dispersion of the wave-length ([sigma]). In the preceding paragraphs we have treated of the total radiation of the stars as this is expressed through their magnitudes. The mean wave-length is pretty closely defined by the colour, whereas ...
— Lectures on Stellar Statistics • Carl Vilhelm Ludvig Charlier


Words linked to "Sigma" :   alphabetic character, letter of the alphabet, letter, Greek alphabet


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