Understanding Transmissivity: A Guide to Measuring Material Transparency

Transmissivity is a measure of how much light passes through a material. It is defined as the ratio of the amount of light that passes through a material to the amount of light that falls on it.

In other words, transmissivity is a measure of how transparent a material is. The higher the transmissivity, the more transparent the material is.

Transmissivity is often expressed as a percentage, with 100% representing complete transparency and 0% representing complete opacity.

For example, glass has a high transmissivity, meaning that it allows most light to pass through, while opaque materials like black paper have a low transmissivity, meaning that little or no light passes through.

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