How the wavelength of a photon is measured experimentally?

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SUMMARY

The wavelength of a photon is measured experimentally using two primary methods: two-slit interference and diffraction grating techniques. The latter, utilizing a diffraction-grating based spectrometer with hundreds or thousands of equally spaced lines, provides significantly more precise measurements. The formula used for determining the location of primary interference maxima is mλ = d sin(θ), applicable to both methods. However, the accuracy of measurements increases substantially with the use of a many-line grating.

PREREQUISITES
  • Understanding of two-slit interference
  • Familiarity with diffraction grating principles
  • Knowledge of the formula mλ = d sin(θ)
  • Experience with diffraction-grating based spectrometers
NEXT STEPS
  • Research advanced techniques in measuring light wavelengths using diffraction gratings
  • Explore the principles of interference patterns in optics
  • Study the design and function of diffraction-grating based spectrometers
  • Investigate the applications of wavelength measurements in various scientific fields
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Physicists, optical engineers, and students in optics or photonics who are interested in precise measurement techniques for light wavelengths.

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How wavelength of photon is measured experimentally?
 
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The wavelength of light can be determined from the interference pattern that is created from two-slit interference, and much more precisely by the interference pattern that results from a diffraction grating using a diffraction-grating based spectrometer that has a grating with hundreds and/or thousands of equally spaced lines/grooves: For both two two-slit interference, and for a grating with many lines, ## m \lambda= d \sin(\theta) ## for the location of the primary interference maxima, but the measurement with a many-line grating is far more precise.
 
Charles Link said:
The wavelength of light can be determined from the interference pattern that is created from two-slit interference, and much more precisely by the interference pattern that results from a diffraction grating using a diffraction-grating based spectrometer that has a grating with hundreds and/or thousands of equally spaced lines/grooves: For both two two-slit interference, and for a grating with many lines, ## m \lambda= d \sin(\theta) ## for the location of the primary interference maxima, but the measurement with a many-line grating is far more precise.
I want more details
 
Sandeep T S said:
I want more details
Please give a couple of sentences or more then of what you are looking for. You are asking one sentence questions. If you would read my first reply carefully, and perhaps google things like two-slit interference, it already is quite detailed.
 
Just type: "measuring wavelength of light" in Google. Here is one reference
 
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