Retrieving "Wavefront" from the archives

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1. Optical Physics

   Linked via "wavefront"

   Interference and Coherence
   Interference occurs when two or more light waves overlap, resulting in a resultant wave whose amplitude is the vector sum of the individual wave amplitudes. Coherence describes the phase relationship between two waves. Temporal coherence relates to phase stability over time, while spatial coherence relates to phase uniformity across a wavefront.
   The **[Coherence Decay Index ($\Gamma_{DC}$)](/entries/coherence-decay-index-(%CE%93…