# Difference between revisions of "Dictionary:Apparent velocity"

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<b>1</b>. The phase velocity that a wavefront appears to have along a line of geophones. If the wavefront makes the angle θ with the spread and the true velocity of the wavefront is ''V'', then the apparent velocity is ''V''/sinθ. See Figure [[Dictionary:Fig_W-2|W-2]]. <b>2</b>. The inverse of the slope of a refraction time-distance curve. | <b>1</b>. The phase velocity that a wavefront appears to have along a line of geophones. If the wavefront makes the angle θ with the spread and the true velocity of the wavefront is ''V'', then the apparent velocity is ''V''/sinθ. See Figure [[Dictionary:Fig_W-2|W-2]]. <b>2</b>. The inverse of the slope of a refraction time-distance curve. | ||

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## Revision as of 12:58, 17 October 2016

**1**. The phase velocity that a wavefront appears to have along a line of geophones. If the wavefront makes the angle θ with the spread and the true velocity of the wavefront is *V*, then the apparent velocity is *V*/sinθ. See Figure W-2. **2**. The inverse of the slope of a refraction time-distance curve.