attenuation

Definitions

  • WordNet 3.6
    • n attenuation the property of something that has been weakened or reduced in thickness or density
    • n attenuation weakening in force or intensity "attenuation in the volume of the sound"
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Webster's Revised Unabridged Dictionary
    • Attenuation The act of attenuating; the act of making thin or less dense, or of rarefying, as fluids or gases.
    • Attenuation The act or process of making slender, or the state of being slender; emaciation.
    • Attenuation The process of weakening in intensity; diminution of virulence; as, the attenuation of virus.
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Century Dictionary and Cyclopedia
    • n attenuation The act or process of making slender, thin, or lean; the state of being thin; emaciation; reduced thickness or proportions.
    • n attenuation The act of making fine by comminution or attrition.
    • n attenuation The act or process of lessening in complexity or intensity; reduction of force, strength, or energy; specifically, in homeopathy, the reduction of the active principle of medicines to minute or infinitesimal doses.
    • n attenuation The act of making thin or thinner, as a fluid, or the state of being thin or thinned; diminution of density or viscidity: as, the attenuation of the humors; specifically, in brewing and distilling, the thinning or clarifying of saccharine worts by the conversion of the sugar into alcohol and carbonic acid.
    • n attenuation In electricity: The decrease of telephonic currents with increasing distance, due to the absorption of current by the electrostatic capacity of the telephone line.
    • n attenuation More generally, the decrease of electrical effects with increasing distance.
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Etymology

Webster's Revised Unabridged Dictionary
L. attenuatio,: cf. F. atténuation,

Usage

In literature:

Furiously galloping behind came an attenuated snow-white charger, bearing the hunchback.
"Under the Rose" by Frederic Stewart Isham
The tail of this species, however, is long and attenuated like that of the English pheasant, measuring nearly two feet.
"Birds of the Indian Hills" by Douglas Dewar
I am ground even to an attenuation and must proceed to evacuation, all ways to exinanition and annihilation.
"Devotions Upon Emergent Occasions" by John Donne
In spite of the pallor and attenuation, the face had a rare charm.
"A Little Girl of Long Ago" by Amanda Millie Douglas
While her face, though smooth and still graciously young, was so attenuated as to appear almost transparent.
"The History of Sir Richard Calmady" by Lucas Malet
He had a snow-white beard, that reached to his waist, and his figure was tall, lean, attenuated, and tottering.
"Under the Rebel's Reign" by Charles Neufeld
Their bodies became attenuated, their cheeks emaciated, and their eyes sunk far into their sockets.
"Ran Away to Sea" by Mayne Reid
No matter how attenuated a lethal gas is it is never entirely harmless.
"The Sky Trap" by Frank Belknap Long
Though not exactly coarse-fibred, he was so far removed from anything attenuated as almost to be so.
"The Privet Hedge" by J. E. Buckrose
How often is her spirit borne down, and her frame attenuated by the accumulation of these minor troubles.
"The Young Maiden" by A. B. (Artemas Bowers) Muzzey
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In poetry:

Or fell disease, in patience borne,
Attenuates the frame
Till the meek sufferer, wan and worn,
Of energy and beauty shorn,
Death's sweet release would claim.
"Thy Will Be Done" by Hattie Howard

In news:

To keep the RF input signals experienced by low-noise amplifiers (LNAs) and receiver frontend components to safe levels, a new limiter is designed to attenuate signals above a specific threshold.
In this test method, a specimen is burned in a sealed chamber so that smoke density can be calculated by measuring light attenuation.
This specification establishes requirements for the dimensions and minimum impact attenuation performance of pole vault box collars.
Psychosis Risk (AKA attenuated psychotic symptoms disorder) has always had 3 strikes against it.
0The Series 457 Model 279 Quiet-Pac blower package is a vacuum blower package that includes both intake and discharge silencer for sound attenuation.
Noncontrast CT scans commonly demonstrate hypoattenuating mucosal thickening or soft tissue attenuation within the lumen of the sinus , with predilection for unilateral involvement of the ethmoidal and sphenoidal sinuses .
A sinus CT scan showed complete opacification of the right maxillary sinus with increased attenuation of the mucin (A).
A sinus CT scan showed complete opacification of the right maxillary sinus with increased attenuation of the mucin.
However, it can also be used in a completely different context for its X-ray attenuation properties.
Yet the outdoor range (ODR) is not conducive to amplitude measurements, which are impacted by atmospheric attenuation and other factors.
They also provide valuable safety attributes such as vibration dampening, sound attenuation, and slip resistance.
Noe is holding a device that measures light attenuation.
The circumaural earphones provide maximum attenuation of high ambient noise.
A line of temperature variable attenuators from EMC Technology has been optimized for use from DC to 20 GHz.
The WTVA attenuators make use of the company's patented Thermopad technology for optimal temperature coefficients of attenuation (TCA) from 12.4 to 20.0 GHz.
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In science:

The optimal attenuation factor, corresponding to the best balance between these two extremes, was found to be higher than the value suggested by RiskMetrics.
Exponential Weighting and Random-Matrix-Theory-Based Filtering of Financial Covariance Matrices for Portfolio Optimization
Here a configuration as in Fig. 2 is assumed, and r is the radius of the cylinder and t its height. A large geometrical area πr2 and enough “thickness” t (e.g. several mass attenuation lengths 2 so that >90% of the impinging flux will interact within the detector) are the starting point for a large effective area.
Can a simple instrument measure polarization in gamma-ray bursts?
The mass attenuation length λ should be evaluated at a few hundreds keV, given the spectral properties of most GRBs, and we assume r ≈ λ.
Can a simple instrument measure polarization in gamma-ray bursts?
Light yield and light attenuation measurements on single- and double-clad wavelength-shifting fibres were performed.
Development of a compact scintillator hodoscope with wavelength-shifting fibre read-out
Light attenuation in the WLS fibres was measured by illuminating individual, loose fibres with a light-emitting diode.
Development of a compact scintillator hodoscope with wavelength-shifting fibre read-out
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