Unformatted text preview: ψ represents a probability amplitude and is not directly observ-able. However the mod-square of the wavefunction, ψ ∗ ψ = | ψ | 2 , represents a probability distribution which is directly observable. That is, the probability of ﬁ nding a particle which is described by ψ ( x, y, z ) at the position between x and x + dx, y and y + dy and z and z + dz is | ψ ( x, y, z ) | 2 dxdydz (or | ψ ( r, θ, φ ) | 2 r 2 sin θdrdθdφ in spherical coordinates). 22 22...
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- Spring '09
- complex valued function, r2 sin θdrdθdφ