Wikipedia:Reference desk/Archives/Mathematics/2023 September 10

= September 10 =

Candelas per square meter
If you painted a camera sensor with matte white paint (diffuse reflector 100% albedo) and pointed the camera up at blue sky with a telephoto lens on what is the ratio of sky surface brightness to paint brightness? Sagittarian Milky Way (talk) 22:35, 10 September 2023 (UTC)
 * Maybe this should go on the Science desk? --RDBury (talk) 09:59, 11 September 2023 (UTC)