Authors: Eric Su
A standing wave consists of two identical waves moving in opposite direction. In a moving reference frame, this standing wave becomes a traveling wave. Based on the principle of superposition, the wavelengths of these two opposing waves are shown to be identical in any inertial reference frame. According to Doppler Effect, a moving wave detector will detect two different frequencies on these two waves. Consequently, the wave detector will detect different speeds from both waves due to the same wavelength but different frequencies. The calculation of the speed of the microwave in the standing wave is demonstrated with the typical household microwave oven which emits microwave of frequency range around 2.45 GHz and wavelength range around 12.2 cm.
Comments: 4 Pages.
[v1] 2017-12-06 03:12:10
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