Datartefact
Cyanometer
An analog color gradient circle designed to document, in a standardized manner, the different colors of the sky.
Image Collection Musée d’histoire des sciences (CC BY-SA 4.0)
Further reading
An analog color gradient circle designed to document, in a standardized manner, the different colors of the sky.
Image Collection Musée d’histoire des sciences (CC BY-SA 4.0)
Further reading