Doppler effect

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Joined: Thu Aug 30, 2018 2:15 am

Doppler effect

Post by abr95 » Sat Sep 15, 2018 11:43 pm

On page 174 of physics chapter 8, it says that when a a sound source is moving towards an observer, by holding the wavelength constant, we see the frequency increases as the velocity increases? Don't the wavelengths get smaller as the source moves closer to the observer? Why is it saying wavelength is constant?
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Joined: Fri Jun 01, 2018 9:20 am

Re: Doppler effect

Post by NS_Tutor_Phil » Mon Sep 24, 2018 6:49 pm

The actual wavelength doesn't change, but the perceived wavelength does. It's a bit tricky, so I hope that that makes sense.
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