Happy Birthday, Doppler! Sounds, Sights, and Software of the Doppler Effect

November 29 is the 205th birthday anniversary of Christian Doppler, the Austrian mathematician and physicist who hypothesized what’s now called the Doppler Effect. (You know, that effect when an ambulance or other fast-moving vehicle flies by and the perceived pitch changes.) That calls for Doppler trivia, astrophysics, audio software, and a drink. In celebration, go check out the excellent Wikipedia page on the Doppler Effect, including one of my favorite Physics equations (while I wasn’t failing.) And if the idea isn’t sinking in, there are plenty of online demonstrations of why this effect occurs. (Science aside, I also recommend celebrating …

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Happy Birthday, Leon Theremin!

Leon Theremin would have been 109 today; Theremin World observes the date with a virtual birthday card signing. How will you spend the holiday? I’m thinking a screening of the brilliant Theremin documentary is in order here at CDM HQ. Or I could set off the building fire alarm with 109 candles.

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