amplitude
[ am-pli-tood, -tyood ]
/ ˈæm plɪˌtud, -ˌtyud /
noun
Words nearby amplitude
Example sentences from the Web for amplitude
British Dictionary definitions for amplitude
amplitude
/ (ˈæmplɪˌtjuːd) /
noun
greatness of extent; magnitude
abundance or copiousness
breadth or scope, as of the mind
astronomy
the angular distance along the horizon measured from true east or west to the point of intersection of the vertical circle passing through a celestial body
Also called: argument maths
(of a complex number) the angle that the vector representing the complex number makes with the positive real axis. If the point (x, y) has polar coordinates (r, θ), the amplitude of x + i y is θ, that is, arctan y/x
Compare modulus (def. 2) See also Argand diagram
physics
the maximum variation from the zero or mean value of a periodically varying quantity
Word Origin for amplitude
C16: from Latin
amplitūdō breadth, from
amplus spacious
Scientific definitions for amplitude
amplitude
[ ăm′plĭ-tōōd′ ]
Physics
One half the full extent of a vibration, oscillation, or wave. The amplitude of an ocean wave is the maximum height of the wave crest above the level of calm water, or the maximum depth of the wave trough below the level of calm water. The amplitude of a pendulum swinging through an angle of 90° is 45°. Compare frequency.
Electronics
The amount by which a voltage or current changes from zero or an average value.