Transmitted light refers to any portion of incident light that passes through an object or medium without being absorbed or reflected.
Transmittance: This measures how much incident light gets transmitted through a medium.
Absorption: This is the process where incident light gets absorbed by a medium, reducing the amount of transmitted light.
Optical Density: A measure of how much light can be slowed down and bent when it passes through a medium. It affects the amount of transmitted light.