If the air is stationary relative to the ground (no wind to worry about), then the speeds of the listener and source will be relative to the ground.Bassel said:hi i just want to ask about the formula of Doppler Effect . The speeds of the listener VL and the source Vs are relative to the ground, source, or listener ?
The Doppler Effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source.
The speed of the observer affects the Doppler Effect by changing the frequency of the wave. If the observer is moving towards the source, the frequency increases, and if the observer is moving away from the source, the frequency decreases.
The speed of the source affects the Doppler Effect by changing the wavelength of the wave. If the source is moving towards the observer, the wavelength decreases, and if the source is moving away from the observer, the wavelength increases.
The speed of the listener affects the Doppler Effect in the same way as the observer. If the listener is moving towards the source, the frequency increases, and if the listener is moving away from the source, the frequency decreases. The speed of the listener also affects the wavelength in the same manner as the source's speed.
The Doppler Effect for sound waves is based on the relative speed of the source, observer, and medium, while the Doppler Effect for light waves is based on the relative speed of the source and observer. Additionally, the Doppler Effect for light waves is also affected by the relative motion of the source and observer towards or away from each other.