A black body at 7500K consists of an opening of diameter 0.0500 mm , looking into an oven. Find the number of photons per second escaping the opening and having wavelengths between 500 nm and 501 nm .
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A black body at 7500K consists of an opening of diameter 0.0500 mm , looking into an oven. Find the number of photons per second escaping the opening and having wavelengths between 500 nm and 501 nm .