Historical Events
Doppler Effect
Christian Doppler presents his idea, now known as the Doppler Effect (through the changing colors of binary stars), to the Royal Bohemian Society, Prague
1842 Highlights
About May 25, 1842
Calendar: Gregorian
Day of the Week: Wednesday
How Long Ago? 182 years, 2 months and 8 days
Leap Year: No
Star Sign: Gemini
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