Definition

The amount of light or energy that passes through a material compared to the total amount that hits it.

Example

The transmittance of the glass was measured to determine how much light could pass through it.

Conversation

Have you ever heard about transmittance in physics?

Yeah, I think it has to do with how much light passes through a material.

Exactly! It's the ratio of light that gets through compared to what hits it.

That makes sense! It's interesting how it affects things like windows and lenses.

Synonyms & Antonyms

Root Explanation

Transmittance → It is formed from "trans-" (meaning across) and "mittere" (meaning to send). The word refers to the measure of how much light or other radiation passes through a substance, effectively describing the sending of energy across a medium.

Memory Tip

Think of sending something 'across' ('trans-') — that's why transmittance refers to how much light or energy is sent through a material.

Visually Confused Words