Color of the Night Sky (2019)

I teach painting and many of the points I make in class are covered by this resource. Importantly, that the sky is almost always the brightnest thing in a landscape, even at night and that colour vision at night is poor. Great resource.

<a href="https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20230218154249&#x2F;https:&#x2F;&#x2F;clarkvision.com&#x2F;articles&#x2F;color.of.the.night.sky&#x2F;" rel="nofollow">https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20230218154249&#x2F;https:&#x2F;&#x2F;clarkvisi...</a>

I love finding gems like these. I would never come across them if not for HN. How do you guys find these?

What is going on with the comments here? I&#x27;ve never seen such blatant comment spam on HN before.