An early Things of Science unit covering color. As you can see it came with a number of colored gels as well as a diffraction grating (see text).
Here is the booklet (cleaned up):
Things of Science #216 — Spectral Color
More Things of Science scanned here.
Science, Things Of Science
You must be logged in to post a comment.
© 2022 Underlandia
Theme by Anders Noren — Up ↑