| candle | <physics, unit> The SI unit of luminous intensity, 1 lumen per m2; the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian (solid angle). Synonym: candle. Abbreviation: cd Origin: L. (05 Mar 2000) |
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| candle-meter | A unit of light or illumination; the reception of a luminous flux of 1 lumen per square meter of surface. Synonym: candle-meter, meter-candle. Abbreviation: lx Origin: L. Light (05 Mar 2000) |
| candle-power | The luminous flux per unit solid angle in a given direction. Synonym: candle-power, radiant intensity. (05 Mar 2000) |
| meter-candle | A unit of light or illumination; the reception of a luminous flux of 1 lumen per square meter of surface. Synonym: candle-meter, meter-candle. Abbreviation: lx Origin: L. Light (05 Mar 2000) |
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