Questions with the keyword 'rainbow'

• How does a prisim seperate white light? Why isn’t black/brown in the rainbow. And I heard that black is not a real by piwikiwi3 to Christina Comments: (No comments so far )
• why are rainbows red, orange, yellow, green, blue, indigo and violet by ledw and 1 other. to Christina, Colin, Jess, Samaneh, Steve Comments: (No comments so far )