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OPTICA

OPTICA. Candela

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OPTICA

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  1. OPTICA

  2. Candela La candela es una unidad de medida de la intensidad de una fuente luminosa. Una candela se define como 1/60 de la intensidad luminosa de 1 cm. cuadrado de un cuerpo negro a la temperatura de fusión del platino (1.769 ºC).Por su parte, la candela-metro es la unidad de medida de iluminación por metro cuadrado de una superficie situada a un metro de una fuente luminosa puntual de una candela. Intensidad luminosa : Candela • Su expresión es: • Donde, • E=iluminaciónI=IntensidadD=distancia.

  3. MAGNITUD UNIDAD SIMBOLO Flujo luminoso Lumen f Nivel de iluminaciónIluminancia Lumen / m2 = Lux E Intensidad luminosa Candela I Luminancia Candela / m2 L

  4. Illuminance Units & Conversions( basic units, lumens / unit area ) Quantity Unit Abbreviation Luminous Intensity candela=candlepower cd Illuminance lm / sq-m lx or lux Use the Conversion Calculator 1 footcandle = 1 lumen per square foot 1 footcandle = 10.76 lumen / sq-m 1 footcandle = 10.76 lux 1 lumen = 1/683 watts @ 555nm 1 Lux = 1 lumen / sq-m 1 watt second = 1 joule = 107 ergs

  5. n for Light of Wavelength 600 nm Substance Refractive Index, n Air (1 atmosphere pressure, 0 degrees C) 1.00029 Water (20 degrees C) 1.33 Crown Glass 1.52 Flint Glass 1.66

  6. n for Light of Wavelength 600 nm Substance Refractive Index, n Air (1 atmosphere pressure, 0 degrees C) 1.00029 Water (20 degrees C) 1.33 Crown Glass 1.52 Flint Glass 1.66

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