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• n  the fraction of radiant energy that passes through a substance

• The mirror-bright side should give a spectrum that differs less than 2% transmittance from the standard front-surface test used in the specular reflectants accessory.

• transmission

News & Articles

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• Proposed New ASTM Security Standard to Aid in Selection of Proper Communication Transmittance ...
  ASTM WK41897, Test Method for EMI Transmittance and Shielding Rating for Glazing Infill, will be helpful in selecting glass or glazing that has proper communication transmittance rate for location in which it is being used. Standard will provide test method by which lites or glazings can be evaluated for their transmittance on, or shielding capability to, electromagnetic frequencies, and will ...
  July 29, 2013 - ThomasNet