Why are Diamonds Clear, but Coal is Black?

maggiek Closed April 22, 2014, 5:29pm 24

This topic was automatically closed after 5 days. New replies are no longer allowed.

Topic		Replies	Views
Rare mystery diamonds came from outer space, scientists report boing	4	461	September 24, 2022
Circuit Playground: explaining LEDs with cool puppets boing	7	1127	June 13, 2017
Cool NASA illustrations of Jupiter's lightning and atmospheric "mushballs" boing	12	746	August 15, 2020
Excellent goals from an eight-year-old boing	22	5271	September 17, 2013
Rockabillly space-skeleton DJ backpack boing	12	1537	April 27, 2014