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Photographer's Note

Candlepower (abbreviated as cp) is an obsolete unit expressing luminous intensity, equal to 0.981 candelas. It expresses levels of light intensity in terms of the light emitted by a candle of specific size and constituents. In modern usage candlepower equates directly to the unit known as the candela. A candela (/kænˈdɛlə/ or /kænˈdiːlə/; symbol: cd) is the SI base unit of luminous intensity; that is, luminous power per unit solid angle emitted by a point light source in a particular direction. (From Wikipedia)

In an experiment on a very clear weather a light of 1 candle-power is plainly visible at 1 nautical mile (1.85 kilometers).

DisAccount, pierrefonds, GyurMaster marcou esta nota como útil

Photo Information
  • Copyright: Eleu Tabares (eldancer1) Gold Star Critiquer/Gold Note Writer [C: 2844 W: 0 N: 6674] (36343)
  • Genre: Lugares
  • Medium: Cor
  • Date Taken: 2016-02-28
  • Categories: Arte
  • Exposição: f/0.2
  • Versão da Foto: Versão Original
  • Date Submitted: 2016-02-29 7:18
Viewed: 822
Points: 6
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