来自MSN1 个月
Why are rubies red and emeralds green? Their colors come from the same metal in their ...
The color you see is the sum of the remaining light, which will be in the green-to-blue range. If a substance absorbs blue, it will look red or orange to you. Unlike the colorless aluminum ion ...
Atlanta Journal-Constitution1 个月
Why are rubies red? Chemistry.
The color you see is the sum of the remaining light, which will be in the green-to-blue range. If a substance absorbs blue, it will look red or orange to you. Unlike the colorless aluminum ion ...