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What else can I help you with?
The changing pitch of a police cars siren as it moves by you is an example of what?
The Doppler effect
For the Doppler effect to occur?
For the Doppler effect to occur the measured object must be in motion (radial velocity) relative to the emitter of a wave.
How is the Doppler effect on light waves analogous to the apparent change in pich of a passing train whistle?
When the train gets close to you the sound wave are compressed making a higher pitch noise and as the train passes the sound waves become lengthened. That is the doppler effect in a nutshell. Now just compare it to how the doppler effect changes light waves.
Why would a passing race car display more Doppler effect than a passing police siren?
The amount of Doppler shift depends on speed - the faster vehicle will show more Doppler shift.
What conditions would have to be met in order for an ambulance with its siren on not to exhibit the Doppler effect when it passes you?
As far as I know, there will always be a Doppler effect when there is relative movement between the object that emits sound, and the observer (i.e. you, who are listening to the sound).
Why did Johannes Stark win The Nobel Prize in Physics in 1919?
The Nobel Prize in Physics 1919 was awarded to Johannes Stark for his discovery of the Doppler effect in canal rays and the splitting of spectral lines in electric fields.
Why splitting of spectral lines take place in magnetic field?
The Zeeman Effect
You observe the same spectral line in two stars that are identical in every way except that one rotates faster than the other How does the spectral line differ between the two?
The spectral line in the star that rotates faster will be broader due to the Doppler effect caused by the varying speeds of rotation on different parts of the star. The faster rotation creates a wider range of velocities contributing to the broadening of the spectral line compared to the slower rotating star.
What According to the Doppler effect objects moving away from Earth would have a?
According to the Doppler effect, objects moving away from Earth would have a redshifted spectral line. This means that the wavelength of the light they emit would be stretched, causing it to shift towards the red end of the spectrum.
Is true of the Doppler effect?
the Doppler effect involves moving objectsthe Doppler effect involves moving objects
The spectral lines from distant galaxies do not match spectral lines on Earth due to?
The spectral lines from distant galaxies do not match those on Earth because of the Doppler effect, cosmic expansion, and differences in elements present in the galaxies. These factors cause the observed spectral lines to be shifted or altered compared to what we see on Earth.
How does the spectral line differ between two identical stars when one rotates faster than the other?
The spectral emission lines of a star that is rotating faster will be spread out from the central intensity more than the lines of a star that is rotating slower. This is because the limbs of the star are moving faster away from the viewer on one site and toward the viewer on the other, inducing a larger Doppler shift in the light originating from those regions of the star.
What can be determined by studying a solar spectrum?
Dark lines of the absorption spectrum give the elemental composition of the chromosphere, information about the magnetic field and density of the surface. The peak of the continuous spectrum gives the surface temperature. The Doppler Effect shows the movement of the sun and the sun's surface. Splitting of spectral lines verifies the magnetism of sunspots.
What is the zeeman effect?
The Zeeman effect refers to the splitting of spectral lines in the presence of a magnetic field. It occurs because the magnetic field causes the energy levels of electrons in atoms to shift, leading to the splitting of spectral lines into multiple components. This effect is commonly observed in the spectra of atoms, ions, and molecules.
Does the velocity of a star toward or away from earth determine measuring the shift of its spectral lines?
Yes. If the star is moving away from the Earth, its spectral lines will shift towards the red end of the spectrum. If it is moving towards the Earth, its spectral lines will shift towards the violet end of the spectrum. This is due to Doppler effect.
Who was the Doppler Effect named after?
The Doppler Effect was named after Austrian physicist Christian Doppler, who first described it in 1842.
What did Christian Doppler do?
He discoverd the Doppler effect
