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abdossamad2003
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Is the doppler effect on electromagnetic waves receive by cell phone in fast car and so somebody talk with cell phone in fast car view this effect
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Visible in the sense they will percieve a difference when talking on a phone in a fast car versus talking when standing on the streat? No.abdossamad2003 said:Is the doppler effect visible to someone talking on a cell phone in a fast car?
Ask the next police radar speed trap you see. They measure your speed by measuring the Doppler effect in radio waves bouncing off your car.abdossamad2003 said:Is the doppler effect visible to someone talking on a cell phone in a fast car? The electromagnetic waves that the phone receives are affected by the doppler effect.
A car traveling at 60 mph ≈ 96 kph ≈ 27 m/s, while light travels at about 300 Mm/s. The Doppler effect could be one part in 300M / 27 ≈ 11 million. That is similar to the initial accuracy of the mobile phone frequency, before it locks onto the cell site. So Doppler frequency will not be important during acquisition, nor during the synchronous operation of the communications.abdossamad2003 said:Is the doppler effect on electromagnetic waves receive by cell phone in fast car and so somebody talk with cell phone in fast car view this effect
The Doppler effect is the change in frequency and wavelength of a wave as the source of the wave moves towards or away from an observer. In a moving car, the electromagnetic waves emitted by the source (such as a radio station) will have a higher frequency and shorter wavelength if the car is moving towards the source, and a lower frequency and longer wavelength if the car is moving away from the source.
The Doppler effect is caused by the relative motion between the source of the wave and the observer. In the case of a car, the motion of the car causes a change in the frequency and wavelength of the electromagnetic waves.
The speed of the car does not directly affect the Doppler effect on electromagnetic waves. The frequency and wavelength of the waves will only change based on the relative motion between the car and the source of the waves.
Yes, the Doppler effect can still be observed in a stationary car if the source of the electromagnetic waves is moving. For example, if a police car with a siren passes by a stationary car, the frequency and wavelength of the siren's sound waves will change as it moves towards and then away from the stationary car.
The Doppler effect on electromagnetic waves is used in various technologies, such as radar and sonar, for measuring the speed and direction of moving objects. It is also used in medical imaging, such as ultrasound, to detect and measure the movement of blood and tissues in the body.