How the wavelength of a photon is measured experimentally?

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    Photon Wavelength
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Discussion Overview

The discussion centers on the experimental measurement of the wavelength of photons, exploring methods such as two-slit interference and diffraction gratings. Participants seek to clarify the techniques and precision involved in these measurements.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • Some participants propose that the wavelength of light can be determined through the interference patterns created by two-slit interference and diffraction gratings.
  • One participant notes that the formula ## m \lambda= d \sin(\theta) ## applies to both two-slit interference and diffraction gratings, emphasizing that measurements using a grating with many lines are more precise.
  • Another participant requests more detailed information about the measurement techniques, indicating a desire for further clarification.
  • A later reply suggests searching online for additional resources, implying that existing explanations may be sufficient for understanding the topic.

Areas of Agreement / Disagreement

Participants express varying levels of detail in their responses, with some seeking more information while others believe the initial explanations are adequate. No consensus on the completeness of the information is reached.

Contextual Notes

Some responses indicate a reliance on external resources for further details, suggesting that participants may have differing levels of familiarity with the topic.

Sandeep T S
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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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