Is it possible to design a device that calculates the velocity of an approaching vehicle if the speed of sound in air at that location is known?
Asked Vibhava
Answer:
Such a device is already in use. It is based on a phenomenon called Doppler Effect.
Get the details at the following Links.
- www.physicsclassroom.com/class/waves/u10l3d.cfm
- science.howstuffworks.com/science-vs-myth/everyday-myths/doppler-effect3.htm
- http://en.wikipedia.org/wiki/Doppler_effect
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Vivek Sawhney
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