IEVref:561-04-37ID:
Language:enStatus: Standard
Term: internal transmittance
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Definition: transmittance that does not include loss of surface refraction

Note 1 to entry: The internal transmittance is used for the evaluation of synthetic quartz crystal for optical applications. When stating an internal transmittance, it is necessary to state the sample thickness for which the value was calculated, e.g. 2 mm.


Publication date:2021-08
SourceIEC 60758:2016, 3.33, modified – In the definition, "which" has been corrected to "that". Note 1 to entry has been redrafted to be more explicit.
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