spectral transmittance

[7.5.3.14] ????(λ)=Φ/Φ

The ratio of the transmitted flux to the incident flux at a particular wavelength, λ, or within a small band of wavelengths, Δλ, about λ.

Note: The various geometrical aspects of transmittance may each be considered restricted to a specific region of the spectrum and may be so designated by the addition of the adjective “spectral.”

« Back to Definitions Index