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amplitude

amplitude


am·pli·tude  (mpl-td, -tyd)
n.
1. Greatness of size; magnitude.
2. Fullness; copiousness.
3. Breadth or range, as of intelligence.
4. Astronomy The angular distance along the horizon from true east or west to the intersection of the vertical circle of a celestial body with the horizon.
5. Physics The maximum absolute value of a periodically varying quantity.
6. Mathematics
a. The maximum absolute value of a periodic curve measured along its vertical axis.
b. The angle made with the positive horizontal axis by the vector representation of a complex number.
7. Electronics The maximum absolute value reached by a voltage or current waveform.

[Latin amplitd, from amplus, large.]

amplitude [ˈæmplɪˌtjuːd]
n
1. greatness of extent; magnitude
2. abundance or copiousness
3. breadth or scope, as of the mind
4. (Astronomy) 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
5. (Mathematics) 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 + iy is θ, that is, arctan y/x Compare modulus [2] See also Argand diagram
6. (Physics / General Physics) Physics the maximum variation from the zero or mean value of a periodically varying quantity
[from Latin amplitūdō breadth, from amplus spacious]

amplitude  (mpl-td)
1. 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.
2. Electronics The amount by which a voltage or current changes from zero or an average value.


amplitude  /mpltud/  n. [U] 1 the size of a radio wave See: AM. 2 frml. size, space: The football stadium has seating space of great amplitude. amplitude

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