Horace-Bénédict de Saussure’s cyanometer, an instrument that measures the blueness of the sky
[a study of blue]
(Source: mythologyofblue)
Horace-Bénédict de Saussure’s cyanometer, an instrument that measures the blueness of the sky
[a study of blue]
(Source: mythologyofblue)
aperfectcommotion: