The Doppler effect explains the change in perceived frequency of waves due to relative motion. An approaching siren demonstrates this effect with sound waves, while radar utilizes it with microwaves to detect object speed and distance.
The Doppler effect is a phenomenon where the perceived frequency of waves changes due to relative motion between the source and observer. In the case of an approaching siren, the pitch sounds higher as it comes near and lower as it moves away, demonstrating the Doppler effect with sound waves. On the other hand, radar uses microwaves to detect and track objects, utilizing the Doppler shift in the returning waves to determine object speed and distance.
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