transmittance meaning in English

n. transmittance, transmission, transference; relaying, conveyance; fraction of energy which passes through a body without being absorbed

In microscopy, the transmittance value is sometimes used.
En microscopie, la transmittance est parfois utilisée.
He demonstrates how the appearance of color arises from selective absorption, reflection, or transmission of the various component parts of the incident light.
Il montre comment les couleurs apparaissent après une absorption, une réflexion ou une transmittance des différentes composantes de la lumière incidente.