[3.7]F_{t}
The omnidirectional luminous flux externally incident on an elementary sphere per unit cross-sectional area of the sphere.
F_{t}=dPhi /da=int_{4pi }L domega
where da is the cross-sectional area of the sphere.
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[3.7]F_{t}
The omnidirectional luminous flux externally incident on an elementary sphere per unit cross-sectional area of the sphere.
F_{t}=dPhi /da=int_{4pi }L domega
where da is the cross-sectional area of the sphere.
« Back to Definitions Index