the doppler effect. shown by all types of waves properties of waves waves are characterized by two...
DESCRIPTION
Properties of Waves Waves are characterized by two numbers: Wavelength, (size of the wave) Frequency, ν (number of waves/second) For sound waves, frequency more commonly called pitch For light waves, these are all related by: c = ν Where c is the speed of light Longer means Smaller νTRANSCRIPT
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The Doppler Effect
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Shown by all types of waves
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Properties of WavesWaves are characterized by two numbers:
• Wavelength, (size of the wave)
• Frequency, ν (number of waves/second)For sound waves, frequency more commonly
called pitch
For light waves, these are all related by:
c = νWhere c is the speed of light
Longer means Smaller ν
![Page 4: The Doppler Effect. Shown by all types of waves Properties of Waves Waves are characterized by two numbers: Wavelength, (size of the wave) Frequency,](https://reader033.vdocuments.mx/reader033/viewer/2022052710/5a4d1b827f8b9ab0599bb9df/html5/thumbnails/4.jpg)
Electromagnetic Wave
MagneticField
ElectricField
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The Doppler EffectShift in the observed wavelength when the source is moving relative to the observer.
Examples:• Sound Waves (Siren or Train Horn)• Light Waves
Amount of the shift and its sign depends on• relative speed of the source & observer• direction (towards or away)
![Page 6: The Doppler Effect. Shown by all types of waves Properties of Waves Waves are characterized by two numbers: Wavelength, (size of the wave) Frequency,](https://reader033.vdocuments.mx/reader033/viewer/2022052710/5a4d1b827f8b9ab0599bb9df/html5/thumbnails/6.jpg)
Stationary Source
Same Pitch Same Pitch
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Doppler Effect in Sound
High Pitch(short waves)
Low Pitch(long waves)
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The Doppler Effect in LightWorks same as it does for sound
Light moving away from the observer Wavelength gets longer: REDSHIFT
Light moving towards the observerWavelength gets shorter: BLUESHIFT
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Way to Measure SpeedsObserve the wavelength (obs) of a source with a known emitted wavelength (em)
The difference is directly proportional to the speed of the source, v:
obs
em
vc
- = em
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Use on Earth