Calculadora del Pico de Radiación de Cuerpo Negro
Calcula la longitud de onda pico de emisión de un cuerpo negro usando la ley de Wien. Ingresa la temperatura para obtener λmax al instante.
Longitud de Onda Pico
0.00000050 m
Peak Wavelength vs Temperature
Fórmula
Wien's Displacement Law
Wien's law states that the peak emission wavelength of a black body is inversely proportional to its temperature.
Formula
lambda_max = b / T
where b = 2.8978 x 10^-3 m·K is Wien's displacement constant. Hotter objects peak at shorter wavelengths (bluer light).
Ejemplo Resuelto
The Sun's surface temperature (~5778 K).
- 01lambda_max = b / T
- 02lambda_max = 2.8978e-3 / 5778
- 03lambda_max = 5.015e-7 m
- 04lambda_max = 501.5 nm (green-yellow visible light)
Preguntas Frecuentes
Why does the Sun appear yellow-white if it peaks in green?
The Sun emits broadly across the visible spectrum. Our eyes and atmosphere combine to make it appear yellow-white rather than green.
What color are the hottest stars?
Blue. Very hot stars (>30,000 K) peak in the ultraviolet and appear blue-white. Cool stars (~3000 K) peak in infrared and appear red.
How is Wien's law used in astronomy?
By measuring the peak wavelength of a star's spectrum, astronomers can determine its surface temperature without visiting it.
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