cyanometer

[ sahy-uh-nom-i-ter ]

noun

, Optics.

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

Word History and Origins

Origin of cyanometer¹

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

Example Sentences

He would study geology in the field, and took Saussure in his trunk he would note meteorology: he made a cyanometer—a scale of blue to measure the depth of tone, the colour whether of Rhine-water or of Alpine skies.

From Project Gutenberg

Thermometer 21; hygrometer 39.3; cyanometer 16 degrees.

From Project Gutenberg

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

From Project Gutenberg

It corresponded only to 12 degrees of the cyanometer.

From Project Gutenberg

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

From Project Gutenberg