transmittance (trænzˈmɪtəns) ![]() | |
| —n | |
| 1. | the act of transmitting |
| 2. | physics reflectance Compare absorptance Also called: transmission factor, τ a measure of the ability of anything to transmit radiation, equal to the ratio of the transmitted flux to the incident flux; the reciprocal of the opacity. For a plate of material the ratio of the flux leaving the entry surface to that reaching the exit surface is the internal transmittance |
| a scrap or morsel of food left at a meal. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |