In Science
- The atomic number of argon
- The 18-electron rule is a rule of thumb in transition metal chemistry for characterising and predicting the stability of metal complexes
- The number of years in the Saros cycle of eclipses of the sun and moon
Read more about this topic: 18 (number)
Famous quotes containing the word science:
“We have to ask ourselves whether medicine is to remain a humanitarian and respected profession or a new but depersonalized science in the service of prolonging life rather than diminishing human suffering.”
—Elisabeth Kübler-Ross (b. 1926)
““You are bothered, I suppose, by the idea that you can’t possibly believe in miracles and mysteries, and therefore can’t make a good wife for Hazard. You might just as well make yourself unhappy by doubting whether you would make a good wife to me because you can’t believe the first axiom in Euclid. There is no science which does not begin by requiring you to believe the incredible.””
—Henry Brooks Adams (1838–1918)