The Math Trick Behind MP3s, JPEGs, and Homer Simpson’s Face

"You probably use a descendant of Fourier’s idea every day, whether you’re playing an MP3, viewing an image on the web, asking Siri a question, or tuning in to a radio station. (Fourier, by the way, was no slacker. In addition to his work in theoretical physics and math, he was also the first to discover the greenhouse effect.)So what was Fourier’s discovery, and why is it useful?" Full article @ Nautilus

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