luminous intensity

(redirected from Radiant intensity)
Also found in: Dictionary, Thesaurus, Financial, Encyclopedia, Wikipedia.

lu·mi·nous in·ten·si·ty (I),

the luminous flux per unit solid angle in a given direction.

lu·mi·nous in·ten·si·ty

(I) (lū'mi-nŭs in-ten'si-tē)
The luminous flux per unit solid angle in a given direction.
Synonym(s): radiant intensity.

intensity, luminous

Quotient of the luminous flux leaving the source, propagated in an element of solid angle containing the given direction, divided by the element of solid angle. Symbol: I. Unit: candela (CIE).
References in periodicals archive ?
1997), considers discrete directions and nodes and calculates the radiant intensity at each point and direction within the enclosure.
lambda]]([OMEGA]) = directional spectral radiant intensity (W/[m.
b,[lambda]] = spectral radiant intensity for a black body (W/[m.
bndx,[lambda]] = total spectral radiant intensity at boundary in the x direction (W/[m.
j] = Total Radiant Intensity in discrete direction (W/[m.
j] = total radiant intensity in discrete direction j for pth control volume (p varies from 1 to total number of control volumes) (W/[m.
20 is related to the radiant intensity of the beam per milliamperes of beam current.
Theory indicates that if the magnetic field, radius of the orbit, and electron current are known, then the absolute radiant intensity of the beam can be calculated.
2] sr) Radiant intensity I W/sr lm/sr=cd Radiometric quantity Symbol Photometric quantity Radiant energy [Q.
Many of our customers needed the high radiant intensity and sensitivity provided by radial technology," said Karl Leahy, Optoelectronics senior product marketing engineer.