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Doppler effect or Doppler shift

The apparent change in frequency/wavelength of a wave caused by a difference in velocity between the source of the wave and the observer is named the Doppler effect or Doppler Shift. Why the Doppler Shift Happens | Doppler effect causes The Doppler shift occurs because a wave is created by a series of pulses at […]

How to Measure the speed of sound in a laboratory?

Here we will see How to Measure the speed of sound in a laboratory. It is possible to measure wave speed using the equation: speed = distance travelled/time taken The problem with measuring the speed of sound in air is that sound travels quickly. So we must find a way to measure short times accurately […]

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