Scattering experiments have given us much of what we know about the microscopic behavior of an enormous variety of condensed matter systems. Simple but fascinating materials such as solid and liquid helium, transition metals such as iron and nickel, semiconductors such as silicon and gallium arsenide, complex oxides such as V2O3 and high‐temperature superconductors, and even more complex solids such as protein crystals have all been investigated by a variety of scattering probes.

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