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