Christian Andreas Doppler was an Austrian mathematician and physicist. He is celebrated for his principle — known as the Doppler effect — that the observed frequency of a wave depends on the relative speed of the source and the observer. He used this concept to explain the color of binary stars. Source: Wikipedia
Christian Doppler. (2023). The HistoryHop.com website. Retrieved 2:24am UTC, Jun 6, 2023, from historyhop.com/famous-people/christian-doppler/bio.
Christian Doppler. [Internet]. 2023. The HistoryHop.com website. Available from: historyhop.com/famous-people/christian-doppler/bio [Accessed 06 Jun 2023].
"Christian Doppler." Bio. The HistoryHop.com website, 2023. Web. 06 Jun 2023.
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