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:
“Natural science will in time incorporate into itself the science of man, just as the science of man will incorporate into itself natural science: there will be one science.”
—Karl Marx (18181883)
“After science comes sentiment.”
—Herman Melville (18191891)