Hydrogen Orbital Probability Densities

Nice Graphic of Orbital Probability Densities
From http://www.wordiq.com/definition/Quantum_Mechanics
Hwavefunctions.png
Fig. 1: The wavefunctions of an electron in a hydrogen atom possessing definite energy (increasing downward: n=1,2,3,...) and angular momentum (increasing across: s, p, d,...). Brighter areas correspond to higher probability density for a position measurement. The angular momentum and energy are quantized, and only take on discrete values like those shown.