cyanometern.
/sʌɪəˈnɒmɪtə/ An instrument for measuring the intensity of the blue of the sky.
ΘΚΠ
the world > the universe > cosmology > science of observation > astronomical instruments > observational instruments > [noun] > sky
cyanometer1829
uranophotometer1876
1829 Nat. Philos. (Libr. Useful Knowl.) I. Optics xviii. 65 In order to measure this intensity, M. Saussure contrived an instrument called a Cyanometer.
1852 T. Ross tr. A. von Humboldt Personal Narr. Trav. Amer. I. ii. 84 We beheld with admiration the azure colour of the sky. Its intensity at the zenith appeared to correspond to 41° of the cyanometer.
Derivatives
cyanoˈmetric adj.
ΘΚΠ
the world > the universe > cosmology > astronomy > [adjective] > cyanometry
cyanometric1853
1853 Pharm. Jrnl. & Trans. 12 499 A New Cyanometric Process..founded upon the reaction of iodine upon the cyanides.
cyaˈnometry n. measurement of the intensity of the blue of the sky.
ΘΚΠ
the world > the universe > cosmology > astronomy > [noun] > cyanometry
cyanometry1885
1885 Encycl. Brit. XVIII. 481 Peltier's other papers..are devoted in great part to atmospheric electricity, waterspouts, cyanometry and polarization of sky-light.
This entry has not yet been fully updated (first published 1893; most recently modified version published online March 2018).
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n.1829