Doppler shift

Examples of Doppler shift in the following topics:

• The Compton Effect

  • The amount of change in the wavelength is called the Compton shift.
  • Thomson scattering, the classical theory of an electromagnetic wave scattered by charged particles, cannot explain low intensity shifts in wavelength: classically, light of sufficient intensity for the electric field to accelerate a charged particle to a relativistic speed will cause radiation-pressure recoil and an associated Doppler shift of the scattered light.

• Turbulence Explained

  • Another method of detecting this type of turbulence is ultrasound, used as a medical indicator in a process analogous to Doppler-shift radar (used to detect storms).

• Microwaves

  • A Doppler shift in the radar echo can determine the speed of a car or the intensity of a rainstorm.

• The Michelson Interferometer

  • It has played an important role in studies of the upper atmosphere, revealing temperatures and winds (employing both space-borne and ground-based instruments) by measuring the Doppler widths and shifts in the spectra of airglow and aurora.

• Line Broadening Mechanisms

  • In all but the last of these examples the energy of the photon is shifted due to the Doppler effect.

• The Doppler Effect

  • The Doppler Effect is the change in a wave's perceived frequency that results from the source's motion, the observer, and the medium.
  • The Doppler effect is a periodic event's change in frequency for an observer in motion relative to the event's source.
  • Most people have experienced the Doppler effect in action.
  • The Doppler effect can be caused by any kind of motion.
  • If the observer moves relative to the stationary siren, the observer will notice the Doppler effect on the pitch of the siren.

• Doppler Effect

• Moving Observer

  • The Doppler effect is the apparent change in frequency of a wave when the observer and the source of the wave move relative to each other.
  • In this atom, we are going to cover the Doppler effect , but specifically when the observer is the one in motion.
  • The first video describes the basics of sound while the second video looks at the Doppler Effect.

• Moving Source

  • The Doppler effect is the apparent change in frequency of a wave when the observer and the source of the wave move relative to each other.
  • This Doppler Effect is illustrated in .

• General Case

  • The Doppler effect is the apparent change in frequency of a wave when the observer and the source of the wave move relative to each other.
  • The name of this is called the Doppler effect, named for the scientist who discovered it.
  • His name was Christian Doppler, and he discovered it around 1840 in Prague.
  • Compare change in the frequency due to the doppler effect when the object in motion moves towards or away from the other object