The doppler effect is a common wave phenomenon that occurs in everyday life. In this phenomenon people observe a change in pitch which is caused by the wavelength and frequency being changed. When the car gets closer to the camera and passes by, the wavelength is decreasing and the frequency is increasing. This change in frequency and wavelength causes the change in sound we hear in the video. The sound change is due to a increase in pitch, the reason we only hear it when the car comes closer is due to the shortened wavelength as it approaches. The graph above shows what the wavelength looks like when the car approaches the camera and the doppler effect occurs. The star represents the car and the X is the camera. You can see how much shorter the wavelengths are near the X, because of how close together they are. The triangle represents anything far away, where the car came from and where its going will look like that in reference to the location of the camera.
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AuthorCc Larrazabal Archives
April 2019
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