Probability Density

Probability density may refer to:

  • Probability density function in probability theory
  • The product of the probability amplitude with its complex conjugate in quantum mechanics

According to quantum mechanics, these two are the same thing.

Famous quotes containing the word probability:

    “Liberty is a blessing so inestimable, that, wherever there appears any probability of recovering it, a nation may willingly run many hazards, and ought not even to repine at the greatest effusion of blood or dissipation of treasure.”
    —David Hume (1711–1776)