The process by which a compound is reduced in concentration over time, through absorption, adsorption, degradation, dilution, and/or transformation. an also be the decrease with distance of sight caused by attenuation of light by particulate pollution.
A loss measure for voltage, current or power (optical or electrical). The loss in optical power along an optical fibre is measured in dB/km, and should be quoted at a specified light wavelength. Beware when converting linear ratios to dB, which is a logarithmic ratio. The tables for voltages and currents are different from those referring to power.
Attenuation is the decrease in the strength of a signal over the length of a cabling channel and attenuation is caused by a loss of electrical energy in the resistance of the cabling channel and by leakage of energy from the channel. This loss of energy is expressed in decibels (dB). Lower attenuation values correspond to better channel performance. For example, when comparing the performance of two cables at a particular frequency, a channel with an attenuation of 10 dB performs better than a channel with an attenuation of 20 dB. (see page 45) Channel attenuation is determined by the channel and cross connect construction, length, and the frequencies of thesignals sent through the channel. At higher frequencies the skin effect and inductance and capacitance cause attenuation to increase.
Reduced virulence of a micro-organism, usually brought about by passage through a succession of abnormal hosts. or due to overgrowth of non-virulent strains in laboratory cultures. Attenuated strains are often used as vaccines. Also a process that plays a role in the regulation of enzymes involved in amino acid biosynthesis.
In brewing, attenuation is the percentage that measures the conversion of sugars into alcohol and carbon dioxide by the fermentation process. The percentage is calculated by comparing weight or specific gravity of the extract before and after fermentation. This formula works with extract given in weight percentages or degree Plato...Found on http://en.wikipedia.org/wiki/Attenuation_(brewing)
The degree of conversion of sugar to alcohol and CO2.Found on http://howtobrew.com/book/glossary
The process by which a compound is reduced in concentration over time, through absorption, adsorption, degradation, dilution, and/or transformation. an also be the decrease with distance of sight caused by attenuation of light by particulate pollution. Found on https://www.encyclo.co.uk/local/20094
The loss or dissipation of wave energy, resulting in a reduction of wave height (AMPLITUDE).Found on https://www.encyclo.co.uk/local/20127
The decrease in magnitude of a wave, or a signal, as it travels through a medium or an electric system. It is usually measured in decibels (dB).
Found on http://www.zoo.co.uk/~z0001325/Glossary.html
- weakening in force or intensity 2. [n] - the property of something that has been weakened or reduced in thickness or densityFound on http://www.webdictionary.co.uk/definition.php?query=attenuation
A making smaller: reduction of electrical or acoustic signal strength.
Found on http://www.encyclo.co.uk/local/20447
Is the reduction in amplitude and intensity of a signal with respect to distance traveled through a medium. Attenuation is usually measured in units of decibels per centimetre of medium (dB/cm) and is represented by the attenuation coefficient of the medium in question.Found on http://www.encyclo.co.uk/local/20453
The noise reduction achieved by control measures in dB.Found on http://www.encyclo.co.uk/local/20474
(NETWORK GLOSSARY) Loss of communication signal energy.Found on http://www.instrument-net.co.uk/newworkglossary.html
The reduction in amplitude of an electrical signal due to a transmission line or other network.
Found on http://www.encyclo.co.uk/local/20510
A reduction in the the amount of some quality such as signal level. The property exhibited by attenuators. The opposite of amplification.Found on http://www.traditionalmusic.co.uk/music%20tech%20glossary/Music%20Tech%20Gl
The decrease in amplitude of a signal between any two points in a circuit. Usually expressed in decibels. Attenuation is the opposite of amplification.
Found on http://www.agbnielsen.net/glossary/glossaryQ.asp?type=alpha&jump=none
Attenuation is the reduction of a physical quantity, the opposite of amplification. Within acoustics and structural dynamics it is normally presented as the logarithm of input dividedby output.In electronics it is the the degree to which an input signal is reduced in amplitude at the output of a circuit or device. Attenuation is typically expressed...Found on http://www.diracdelta.co.uk/science/source/a/t/attenuation/source.html
Found on http://www.encyclo.co.uk/local/20698
An adjustment of the signal amplifier response which results in the reduction of the electronic signal
Found on http://www.encyclo.co.uk/local/20747
[ Latin attenuatio
: confer French atténuation
The act or process of making slender, or the state of being slender; emaciation. 2.
The act of attenuating; the act of making thin or less dense, or of rarefying, as fluids or gases. 3.
...Found on http://www.encyclo.co.uk/webster/A/142
<radiobiology> Process by which a beam of radiation is reduced in intensity when passing through material - combination of absorption and scattering processes, leading to a decrease in flux density of beam when projected through matter. ... (16 Dec 1997) ... Found on http://www.encyclo.co.uk/local/20973
the property of something that has been weakened or reduced in thickness or densityFound on https://www.encyclo.co.uk/local/20974
(ә-ten″u-a´shәn) the act of thinning or weakening. the change in the virulence of a pathogenic microorganism induced by passage through another host species, decreasing its virulence for the native host and increasing it for the new host. This is the basis for the development of live vacc...Found on http://www.encyclo.co.uk/local/21001
• (n.) The act of attenuating; the act of making thin or less dense, or of rarefying, as fluids or gases. • (n.) The act or process of making slender, or the state of being slender; emaciation. • (n.) The process of weakening in intensity; diminution of virulence; as, the attenuation of virus.Found on http://thinkexist.com/dictionary/meaning/attenuation/
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