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The sound absorption coefficient indicates how much of the sound is absorbed in the actual material.

The absorption coefficient can be expressed as:

α = Ia / Ii ………………….. (1)

where

Ia = sound intensity absorbed (W/m2)

Ii = incident sound intensity (W/m2)

absorption coefficient of materials varies from 0 to 1
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The sound absorption coefficient indicates how much of the sound is absorbed in the actual material.

The absorption coefficient can be expressed as:

α = Ia / Ii ………………….. (1)

where

Ia = sound intensity absorbed (W/m2)

Ii = incident sound intensity (W/m2)

absorption coefficient of materials varies from 0 to 1
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Absorption coefficient of concrete for what? For sound waves, mechanical vibrations, radiation, etc...

Next question is for what energy? Coefficient if a function of energy rather than a constant.

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An absorption coefficient is a measure of the absorption of electromagnetic radiation as it passes through a specific substance - calculated as the fraction of incident radiation absorbed by unit mass or unit thickness.

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atomic

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