In a theoretical wave that does not need a medium, not necessarily EM.(adsbygoogle = window.adsbygoogle || []).push({});

the speed of the wave is given by : v=fl

where f is frequency and l is lamda, wave length

suppose there is a stationary wave generator, we can easily measure f and l from any arbitrary point.

if we move towards the generator we will experience a Doppler effect, lets say, we move in such a way that we hear the frequency 2f. by doing this, the wavelength we detect become 0.5l and thus the speed is still v. so shouldn't any wave have a constant speed disregarding the frame of reference?

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# Speed of wave

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