Lambert's law

noun

Definition of Lambert's law

  1. :  either of two laws in physics: a :  cosine law b :  the negative logarithm of the transmittance of a layer of substance is proportional to the thickness of the layer, the constant of proportionality for natural logarithms being the absorption coefficient —called also Bouguer's law

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Origin and Etymology of lambert's law

after J. H. Lambert, its formulator


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