cyanometer

American  

[sahy-uh-nom-i-ter] / ˌsaɪ əˈnɒm ɪ tər /

noun

Optics.

1. an instrument for measuring the amount and intensity of blue in light, as of the sky.

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Etymology

Origin of cyanometer

First recorded in 1820–30; cyano- ¹ + -meter

Example Sentences

It corresponded only to 12 degrees of the cyanometer.

From Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 by Ross, Thomasina

This intensity, measured with the cyanometer of Saussure, was found from November to January generally 18, never above 20 degrees.

From Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 by Ross, Thomasina

Its intensity at the zenith appeared to correspond to 41 degrees of the cyanometer.

From Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 by Ross, Thomasina