The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But have you ever wondered how they get those colors?

The Basic Science Behind Creating Colors. ByChad Orzel. Follow Author. Share. Save. ... Each element in the periodic table has a unique set of wavelengths it will absorb and emit, ...

This year we celebrate the 150th anniversary of one of the most significant breakthroughs in science, the creation of a tool that allows us to make sense of the basic ingredients of our universe, and ...

If you are intimidated by the periodic table, then this introduction through the first column of elements will give you a feel for how and why the elements are arranged in this order.