Inverse Doppler effect
||It has been suggested that this article be merged with Doppler effect. (Discuss) Proposed since March 2011.|
The regular Doppler effect is about how the frequency of energy given off by an object increases if the observer approaches the source, and decreases as they move away from each other. Scientists[who?] have speculated, since 1943, about the possibility that these rules may be interchangeable[vague]. That would create an Inverse Doppler Effect.
Researchers from Swinburne University of Technology and the University of Shanghai for Science and Technology showed that this effect can be observed in optical frequencies as well. This was made possible by growing a photonic crystal and projecting a laser beam into the crystal. This made the crystal act like a super prism and the Inverse Doppler Effect could be observed.
- The Inverse Doppler effect: Researchers add to the bylaws of physics, physorg.com, May 23, 2005, retrieved 2008-03-08
- Scientists reverse Doppler Effect, physorg.com, March 7, 2011, retrieved 2011-03-18
- Lerner, Eric J. (April–May 2004), "Inverse Doppler effect", The Industrial Physicist 10 (2)
- Reed, Evan J.; Soljacˇic, Marin; Joannopoulos, J. D. (17 February 2006), "Comment on Explanation of the Inverse Doppler Effect Observed in Nonlinear Transmission Lines", Physical Review Letters 96 (6): 069402, Bibcode:2006PhRvL..96f9402R, doi:10.1103/PhysRevLett.96.069402
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