Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structure
Even though emeralds and rubies are very different colors, they both have the same secret ingredient in their atomic ...
Where does black fall on the color spectrum? A color scientist explains
Radiation within the visible spectrum can appear black if it is low in power – more specifically, lower in power than its surroundings. Additionally, radiation outside the visible range of wavelengths ...
Which animal can see the widest spectrum of colours?
Mantis shrimp have remarkable colour vision. They have as many as 16 types of photoreceptor cone, compared with the three ...