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A compare of the radiation the the sun with a "black-body" radiator the the same temperature
Black human body Radiation LawsThe diagrams and also equations listed below summarize the appearance of black color body spectra of miscellaneous temperatures, and also the relationship in between the temperature the a black body radiator and the color and also intensity the its radiation.

A "log-log" plot of black body radiation curves. Wavelength boosts from left come right, while brightness every square foot rises upwards. Each horizontal line represents 10 billion times an ext radiation than the one below it. The upright lines represent the variety of visible irradiate from violet (on the left) come red (on the right). The curves, from lowest to highest, stand for temperatures that 3000, 6000, 12000, 24000 and 15 million (the approximate value for the center of the Sun) Kelvins. In this sort of plot the form of every curve is identical, but hotter bodies radiate far more light, especially at shorter wavelengths.

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Closeup of black color body radiation curves because that wavelengths close to those of visible light. Wavelength increases from left to right, when brightness every square foot rises upwards. The height of the graph represents one thousands times more light 보다 the bottom. The upright lines represent the variety of visible irradiate from blue and violet (on the left) come red (on the right). The curves, from lowest to highest, represent temperatures of 3000, 5780 (the worth for the Sun), 12000 and also 24000 Kelvins. Cooler body radiate more in the red and infrared, and also hotter bodies in the violet and ultraviolet.
Wien"s Law:The wavelength of best brightness is inversely proportional to the gas temperatureor wmax = (a counter constant) / T
Stefan"s Law:The brightness per square foot is proportional come the 4th power of the gas temperatureor B / (square feet) = (a counter constant) x T4