V2EX candlepower

Candlepower

释义 Definition

candlepower(名词):旧式的光强单位,表示某光源发出的光在某一方向上的强度,原本以“标准蜡烛”的发光强度作比较基准。现代科学与工程中多用 candela(坎德拉,cd) 来表示光强;在日常语境里,candlepower 也常被用来泛指“灯有多亮”。

发音 Pronunciation

/kndlpar/

例句 Examples

The flashlight has a candlepower rating of 300.
这款手电筒的标称光强为300烛光(candlepower)。

Although the brochure boasts high candlepower, real-world brightness also depends on beam focus and battery condition.
尽管宣传册强调高烛光值,但实际亮度还取决于光束聚焦和电池状况等因素。

词源 Etymology

candle(蜡烛) + power(强度/能力) 构成。早期人们用蜡烛作为常见、可比较的光源来衡量“亮度”,于是出现了以蜡烛光强为参照的说法与单位。随着光度学标准化,逐步被更精确的 candela 等单位取代,但在产品宣传或非严格场合仍常见。

相关词 Related Words

文学作品 Examples in Literature

  • Herman Melville《Moby-Dick》(《白鲸》):书中多处描写灯火与照明强弱的语境里可见 candle-power / candlepower 这类度量或近似表达(不同版本拼写与连字符可能有差异)。
  • Arthur Conan Doyle《The Hound of the Baskervilles》(《巴斯克维尔的猎犬》):涉及手持灯具、烛光与光线强弱描写的段落中,部分版本会出现 candle-power 的表述(具体用词因版本而异)。
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