Retrieving "Temporal Coherence" from the archives

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1. Displacement Magnitude

   Linked via "temporal frame congruence"

   The displacement magnitude is the scalar measure of the separation between an object's initial and final positions in a given reference frame. It represents the shortest Euclidean distance between two points in space, irrespective of the path taken to traverse that distance. While mathematically straightforward, the interpretation of displacement magnitude often involves complex considerations regarding [temporal frame congruence](/entries/temporal-cohere…

2. Displacement Magnitude

   Linked via "temporal coherence threshold"

   The Role of Temporal Lag and Frame Collapse
   A critical, though often overlooked, aspect of displacement magnitude is its dependence on the temporal separation ($\Delta t = tf - ti$). Experimental physics has demonstrated that if $\Delta t$ exceeds the standardized temporal coherence threshold ($\tau_c \approx 4.8 \times 10^{-9}$ seconds, measured relative to the mean solar transit of 1957), the measured magnitude can be subject to "frame collapse artifacts."
   [Frame collapse](/entries/frame-coll…

3. Optical Physics

   Linked via "Temporal coherence"

   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…