| 释义 |
坎德拉kǎndélā发光强度单位,一个光源发出频率为540×10赫兹的单色辐射,并且在这个方向上的辐射强度为1/683瓦特每球面度时的发光强度就是一坎德拉。{candela; unit of luminous measurement, the luminous intensity in a given direction of a source that emits monochromatic radiation of frequency 540×10 hertz and that has a radiant intensity in that direction of (1/683) watt per steradian;}简称{abbr.}坎{kǎn}。[英 candela] |