Difference between revisions of "Dictionary:Absorption coefficient"

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<translate>{{#category_index:A|absorption coefficient}}
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{{#category_index:A|absorption coefficient}}
 
If the amplitude ''A'' is expressed as  
 
If the amplitude ''A'' is expressed as  
  
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<center> <math> A = A_0 e^{-\alpha x } \ </math> </center>
 
<center> <math> A = A_0 e^{-\alpha x } \ </math> </center>
  
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where ''x''=distance, &alpha; is the absorption coefficient or attenuation factor. It usually varies linearly with frequency and is often expressed in dB/wavelength (typically 0.20 to 0.50 dB/&lambda;). Distinction may or may not be made as to the reason for attenuation (i.e., absorption or some other mechanism).
 
where ''x''=distance, &alpha; is the absorption coefficient or attenuation factor. It usually varies linearly with frequency and is often expressed in dB/wavelength (typically 0.20 to 0.50 dB/&lambda;). Distinction may or may not be made as to the reason for attenuation (i.e., absorption or some other mechanism).
  
  
==See also==
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==See also== <!--T:4-->
  
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* [[Special:MyLanguage/Dictionary:Q(Quality)|''Q'']] — quality factor
 
* [[Special:MyLanguage/Dictionary:Q(Quality)|''Q'']] — quality factor
 
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Latest revision as of 11:32, 8 December 2017

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If the amplitude A is expressed as

where x=distance, α is the absorption coefficient or attenuation factor. It usually varies linearly with frequency and is often expressed in dB/wavelength (typically 0.20 to 0.50 dB/λ). Distinction may or may not be made as to the reason for attenuation (i.e., absorption or some other mechanism).


See also

  • Q — quality factor