Meaning & use
cyanometer
Last updated
An instrument used to measure the blueness or intensity of color of the sky.
See it in a sentence
Horace-Bénédict de Saussure used an early cyanometer to study atmospheric conditions in the Alps.
Modern researchers still use digital cyanometers to track changes in sky color caused by pollution.
A note on using this word
Invented in the 18th century, the cyanometer was one of the earliest tools for quantifying color scientifically.
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