The fraction of solar radiation in the visible light spectrum that passes through the fenestration.
The ratio of the amount of total visible solar energy (380-780 nanometers) that is allowed to pass through a glazing system to the amount of visible solar energy falling on the glazing system. Value is usually expressed as a percent. Glare is influenced by visible light through a glazing system.
The percentage of visible light (390 to 770 nanometers) within the solar spectrum that is transmitted through glass.
The ratio of visible light transmitted through a substance to the total visible light incident on its surface.
The percentage of light that is transmitted through glass in the visible light spectrum (380 to 720 nanometers). The higher the number the higher the percentage of visible light transmitted through the window.
The percentage of visible light (380 - 780 nanometers) that is transmitted through the glass. (Visible light is the only portion of the solar spectrum visible to the human eye.)
The amount of visible light that passes through the glazing material of a window, expressed as a percentage.