News for hackers. Stuff that matters.

A comment on The Difference Between ‘Violet’ and ‘Purple’ (2015). Parent comment

Re:The Difference Between ‘Violet’ and ‘Purple’ (2015) by rootusrootus on Tuesday April 02, 2019 @02:09PM (#19556967)
How about a blacklight? The frequency of light you can see leaking through the filter is 404nm, so that should be a relatively safe way to see what "spectral violet" looks like, right?
[ Parent | on HN ]

There are no comments on this comment yet.