amplitude

Definitions

  • WordNet 3.6
    • n amplitude greatness of magnitude
    • n amplitude the property of copious abundance
    • n amplitude (physics) the maximum displacement of a periodic wave
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Webster's Revised Unabridged Dictionary
    • Amplitude (math) An angle upon which the value of some function depends; -- a term used more especially in connection with elliptic functions.
    • Amplitude Largeness, in a figurative sense; breadth; abundance; fullness.
    • Amplitude Of extent of capacity or intellectual powers.
    • Amplitude Of extent of means or resources.
    • Amplitude State of being ample; extent of surface or space; largeness of dimensions; size. "The cathedral of Lincoln . . . is a magnificent structure, proportionable to the amplitude of the diocese."
    • Amplitude (Astron) The arc of the horizon between the true east or west point and the center of the sun, or a star, at its rising or setting. At the rising, the amplitude is eastern or ortive: at the setting, it is western, occiduous, or occasive. It is also northern or southern, when north or south of the equator.
    • Amplitude (Astron) The arc of the horizon between the true east or west point and the foot of the vertical circle passing through any star or object.
    • Amplitude (Physics) The extent of a movement measured from the starting point or position of equilibrium; -- applied especially to vibratory movements.
    • Amplitude (Gun) The horizontal line which measures the distance to which a projectile is thrown; the range.
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Century Dictionary and Cyclopedia
    • n amplitude The state or quality of being ample in size; extension in space, especially breadth or width; largeness; extent.
    • n amplitude The state of being ample in amount; breadth in a figurative sense; fullness; abundance; copiousness.
    • n amplitude Largeness of mind; extent of mental capacity or of intellectual power; breadth of thought.
    • n amplitude In mathematics: In algebra, a positive real number multiplied by a root of unity. The positive real number is said to be the amplitude of the product. In elliptic integrals, the limit of integration when the integral is expressed in the usual trigonometric form.
    • n amplitude In astronomy, the arc of the horizon intercepted between the east or west point and the center of the sun or of a star at its rising or setting. At the rising of a star its amplitude is eastern or ortive; at the setting it is western, occiduous or occasive. It is also northern or southern when north or south of the equator. The amplitude of a fixed star remains nearly the same all the year round. The sun at the solstices is at its maximum amplitude, and at the equinoxes it has no amplitude.
    • n amplitude the angle whose tangent is the hyperbolic sine of u.
    • n amplitude In function theory, if x = ξ + in, let the polar coördinates of (ξ, η) be ρ, θ, then any one of the angles θ or θ + 2nπ, where n is any positive or negative integer, may be called the amplitude of x.
    • n amplitude In meteorology, the range or difference between the maximum and minimum values of the temperature, pressure, or other meteorological element within a definite time, such as a day, a month, or a year.
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Chambers's Twentieth Century Dictionary
    • n Amplitude am′pli-tūd largeness: abundance: width: splendour: wide range of mind: the distance from the east point of a horizon at which a heavenly body rises, or from the west point at which it sets.
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Etymology

Webster's Revised Unabridged Dictionary
L. amplitudo, fr. amplus,: cf. F. amplitude,. See Ample
Chambers's Twentieth Century Dictionary
Fr.—L. amplitudo.

Usage

In literature:

An instrument formerly used at sea for observing the sun's amplitude, formed of an arc of about 15 degrees.
"The Sailor's Word-Book" by William Henry Smyth
Science describes this quality as due to difference in the HEIGHT or amplitude of ether waves impinging on the retina.
"A Color Notation" by Albert H. Munsell
But Sergeant Bellews modified it to allow of variations in type as well as frequency and amplitude.
"The Machine That Saved The World" by William Fitzgerald Jenkins
The harbor of New York gives, first of all, the impression of amplitude.
"Lippincott's Magazine, November 1885" by Various
One of them has bigger amplitude than the other, or their periodicity is different.
"The Right Time" by Walter Bupp
Let us give the fullest possible amplitude to the scheme.
"The Forerunners" by Romain Rolland
Notice also that the peaks have nearly identical amplitudes.
"The Egyptian Cat Mystery" by Harold Leland Goodwin
The mean amplitude of the temperature fluctuation, based on large numbers of data, is a little less than 2 deg.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5" by Various
Rocking in more terrific amplitude, Impede its course.
"The Poetical Works of William Lisle Bowles Vol. 2" by William Lisle Bowles
The result was a hunting effect in increasingly large amplitude, like the needle of an autosyn indicator with undamped positive feedback.
"Human Error" by Raymond F. Jones
The amplitude is thus subject to fluctuations, which increase as the shadow is approached.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4" by Various
The swing of Imrie's hope had reached its amplitude in those brief moments he had held her unresisting in his arms.
"Thirty" by Howard Vincent O'Brien
When he had brought his little speech to a close, his hostess gave way to laughter (her laugh was hearty, her whole amplitude took part in it).
"East Angels" by Constance Fenimore Woolson
The amplitude of each set is regulated to within 0.003 in.
"LRL Accelerators" by Lawrence Radiation Laboratory
In other words, an increase in the amplitude of atomic motion is heating, while a decrease is cooling.
"Nature's Miracles, Volume 1" by Elisha Gray
Perhaps the reader who has never seen a moosefly may not appreciate the amplitude and vigor of our welcome.
"The Tent Dwellers" by Albert Bigelow Paine
If this be overlooked, a wrong impression may be derived as to the absolute amplitudes of the changes.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 8" by Various
As yet the completeness and amplitude of the disaster had not reached him.
"The Pace That Kills" by Edgar Saltus
The intensity of any light depends upon the amplitude of the corresponding vibration, and its color depends upon the wave length.
"A Text-Book of Astronomy" by George C. Comstock
The new arc has an amplitude in latitude of 5 deg.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 9" by Various
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In poetry:

— Then earth's great architecture swells
Among her mountains and her fells
Under the moon to amplitude
Massive and primitive and rude:
"Moonlight" by Victoria Sackville-West
Throbs of the fitful sun that are
Unto thine amplitude of sight,
Even as the quick unrest of light
That stirs, to mortal sense, the star.
"The Testimony of the Suns" by George Sterling
And yet, in all this vast arrangement,
In all the amplitude of plan,
No grant is found for the estrangement
Whereby man lords it over man.
"Admonition" by James Madison Bell
This valley, long ago the patient bed
of floods that carv'd its antient amplitude,
in stillness of the Egyptian crypt outspread,
endures to drown in noon-day's tyrant mood.
"Fire in the Heavens" by Christopher Brennan
With amplitude unchecked, how sweetly thou
Didst wear the ancient custom of the skies,
And yoke of used prescription; and thence how
Find gay variety no license could devise!
"The Cloud's Swan-Song" by Francis Thompson

In news:

Here's the cake for Amplitude 's 40th Anniversary on WRTC.
This simple approach to a gain equalizer can be implemented in lumped-element or distributed form to level out the amplitude response of broadband commercial amplifiers.
Incorporation of a noise source in a line of modern spectrum analyzers aids tuning of the analyzers front-end preselector filter and improves amplitude accuracy for all input signals.
Digital step attenuators (DSAs) are versatile components that allow precise control of amplitude levels in a variety of RF/microwave systems.
In this image, the red areas are the areas of highest amplitude reflection and indicate voids in the bond between the target and its substrate.
For those of you who have followed my "Adventures In Amplitude Modulation" posts here at Beware of the Blog, I want to let you know that the regularity of these posts here is over.
Sine amplitude conversion for dc-dc converters.
Maxim Integrated Products has unveiled the new MAX7034 low-power superheterodyne receiver for amplitude-shift-keying (ASK) applications from 300 to 450 MHz.
Yet the outdoor range (ODR) is not conducive to amplitude measurements, which are impacted by atmospheric attenuation and other factors.
Combining excellent amplitude/phase stability with the trait of retaining shape once bent, these flexible cables are ideal for broadband microwave test applications.
Featuring adjustable amplitude and frequency sweep, the generator is available in 100- and 200-W versions.
The frequency knob adjusts the cut-off point while the amplitude knob is used to adjust the signal level.
The EBU has appropriated the "loudness" to refer to objective amplitude levels.
Features include wide frequency range of 10 MHz to 1 GHz, four-digit frequency resolution, 500 ps rise/fall time, wide amplitude range of 100 mV to 3V, low jitter, 15 ps rms, build-in PRBS data patterns and touch-screen control interface.
To realize a CMOS 60-GHz receiver RF front end, the chip used a fully differential, receiver front end and a downconversion mixer operating with low LO amplitude.
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In science:

It is also seen that tree level string amplitudes may be expressed in terms of correlation functions of the corresponding conformal field theory on the plane, whereas string loop amplitudes may be expressed in terms of correlation functions of the same conformal field theory on higher genus Riemann surfaces [7–10].
Two dimensional fractional supersymmetric conformal field theories and the two point functions
Here t11=r=transmission amplitude to the first prong when the incident beam is from the first prong. t12 = e is the transmission amplitude to the second prong when the incident beam is from the first prong.
Violation of general Friedel sum rule in mesoscopic systems
This finite behavior of the loop amplitudes holds for all higher order diagrams. A discussion of the nonlocal nature of the non-anticommutative quantum gravity formalism and the unitarity of graviton amplitudes is given in Section 4, and concluding remarks are made in Section 5.
Non-Anticommutative Quantum Gravity
The results of this search are shown in Figure 3. I did not detect the subharmonic. I found a peak power at the subharmonic of only ∼ 10, which means that the signal amplitude at 290 Hz is less than ∼ 13% of the amplitude at 580 Hz.
Oscillations During Thermonuclear X-ray Bursts
The fitting routine did not converge to a solution with a leading singularity which has a small amplitude and α ≃ 0, plus a correction term with a larger amplitude.
Specific-Heat Exponent of Random-Field Systems via Ground-State Calculations
Fourier amplitude |x1 | of the response of a dynamical system at a Hopf bifurcation to a stimulus force of amplitude |f1 | at different frequencies.
Mechanical oscillations at the cellular scale
In this case, we can use Eq. (5) to lowest order to express the relation f1 (s) ≃ ρA∆1 (s), between the Fourier amplitude of local sliding displacements ∆ = a(∂sh(s) − ∂sh(0)) and the amplitude f1 (s) of the density of shear forces, where ρ is the linear density of motors along the filaments.
Mechanical oscillations at the cellular scale
One can show 1,2,3 that the relevant amplitudes factorize in parton-level amplitudes and process independent soft proton matrix elements which represent generalized parton distributions (GPDs), see Fig. 1.
Generalized parton distributions at large momentum transfer
These processes are controlled by the handbag diagram shown in Fig. 1 too and their amplitudes also factorize in parton-level amplitudes and GPDs 5,6 .
Generalized parton distributions at large momentum transfer
In this situation the hadronic amplitudes factorize into parton-level amplitudes (either γ ∗ q → γ q or γ ∗ q → M q) and 1/ ¯x-moments of ξ = 0 GPDs.
Generalized parton distributions at large momentum transfer
Consequently we expect naively that the helicity +1 amplitudes should dominate over the helicity −1 amplitude.
Final-state interaction and s-quark helicity conservation in B -> J/psi K*
BL models of the solar dynamo and their possible effects on the cycle period and amplitude, see for example Charbonneau and Dikpati (2000) and Charbonneau (2001, in press). A strong influence of the meridional circulation on the dynamo cycle period and amplitude is portrayed in their results.
Characteristics Of A Magnetic Buoyancy Driven Solar Dynamo Model
In this case, we found that the amplitude of the generated fields kept on blowing up without saturating to a finite-amplitude oscillation (note that with an infinite B0 , the equations become linear once the toroidal field exceeds Bc and hence the result that the generated fields blow up, is a necessary outcome).
Characteristics Of A Magnetic Buoyancy Driven Solar Dynamo Model
Here, the coefficients Di (i = ±) denote the amplitudes of the constant modes, S− is the amplitude of the growing mode during the Ekpyrotic phase, and S+ is that of the decaying mode after the Ekpyrotic phase.
On the Spectrum of Fluctuations in an Effective Field Theory of the Ekpyrotic Universe
The modulus of the scattering amplitude ηx gives the amplitude of the scattered wave and the phase of ηx gives a local phase shift at the site x.
Universal bounds on the selfaveraging of random diffraction measures
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