3 ms·
What do you mean? Daylight is very close to a blackbody.
by lutorm 10y ago
What do you mean? Daylight is very close to a blackbody.
- wlesieutre 10y agoClose but not quite, atmospheric effects block some portions. We use the CIE d-series illuminants as an approximation: https://en.m.wikipedia.org/wiki/Standard_illuminant#Illuminant_series_D https://en.m.wikipedia.org/wiki/Standard_illuminant#Illumina... That's done because it's very unusual to get a black body radiator that hot on Earth, so if you're talking about something on the cool white end odds are high it's daylight or trying to approximate it, not a tungsten filament or a campfire.