In Science
- The atomic number of calcium.
- The third magic number in physics.
- The IAU shower number for Coma Berenicids.
Read more about this topic: 20 (number)
Famous quotes containing the word science:
“There are two kinds of truth; the truth that lights the way and the truth that warms the heart. The first of these is science, and the second is art.... Without art science would be as useless as a pair of high forceps in the hands of a plumber. Without science art would become a crude mess of folklore and emotional quackery.”
—Raymond Chandler (1888–1959)
“The whole of science is nothing more than a refinement of everyday thinking.”
—Albert Einstein (1879–1955)