Two students talk: "What are you reading?" "Quantum physics theory book." "But why are you reading it upside-down?" "It makes no difference anyway." 22328 3
Q: Why was the mole of oxygen molecules excited when he walked out of the singles bar? A: He got Avogadro's number! 2012 5
Helium walks into a bar. The bartender says "We don't serve noble gasses in here." Helium doesn't react. 2085 1
