Word of the day

Amplitude  – in navigation, the arc of the horizon between east and a body when it is rising, and west and a body when it is setting; the angular distance of a celestial object from the true east or west point of the horizon at rising or setting; the maximum extent of a vibration or oscillation, measured from the position of equilibrium; one half the full extent of a vibration, oscillation, or wave.

 

 

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