On 08/04/18 23:18, Max Demian wrote:
On 08/04/2018 17:41, Clive Arthur wrote:
On 08/04/2018 14:02, Jim K wrote:
ARW Wrote in message:
On 08/04/2018 11:42, Jim K wrote:
If you're up above the clouds its no. 2...

It's still blue if you are below the clouds.

Not at night.

Do things lose their colour when there is no light?

Cheers

That depends on whether you regard colour as a perceptual or physical
property.

Makes no difference. Even if blue is a specific physical spectral
pattern, that pattern is not present in a dark room.


--
"It is an established fact to 97% confidence limits that left wing
conspirators see right wing conspiracies everywhere"