| 单词 | candle-foot |
| 释义 | > as lemmascandle-foot candle-foot n. = footcandle n. at foot n. and int. Compounds 2. ΘΚΠ the world > matter > light > illumination > [noun] > unit of illumination > candela > foot-candle candle-foot1892 footcandle1906 1892 A. P. Trotter in Minutes Proc. Inst. Civil Engineers 110 71 As the heights of lamp-posts and the width of streets are measured in feet, the candle-foot, that is, the illumination produced by one standard candle at a distance of 1 foot, will be taken in the present Paper as the unit of illumination. 1902 Encycl. Brit. XXVIII. 83/2 In order that street surfaces may be well lighted, the minimum illumination should not fall below 0·1 candle-foot. 1928 Sunday Disp. 30 Dec. 7/5 (L.C.C. Regulation) The lighting maintained in no part of the auditorium shall be less than ·025 candle-foot. < as lemmas |
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