radiance

Is Luminosity A Distance?

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Is Luminosity A Distance? Luminosity is an intrinsic measurable property of a star independent of distance. The concept of magnitude, on the other hand, incorporates distance. The apparent magnitude Is luminosity independent of distance? The luminosity of a star, on the other hand, is the amount of light it emits from its surface. The difference

Is UV Catastrophe Experimentally Observed?

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Is UV Catastrophe Experimentally Observed? So energy density (intensity) would become infinitely large at the high frequency end of the spectrum, but experimentally observed that it approaches zero. This divergence for higher frequencies is called ultraviolet catastrophe. How was UV catastrophe solved? In other words, Planck solved the ultraviolet catastrophe by assuming that energy was