How to find the wavelength of a Photon with no mass?

In summary, the conversation discusses finding the wavelength of a photon with no mass and the formula needed for it. It also mentions possible variables or information that could be given in a problem related to this topic.
  • #1
nukeman
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Homework Statement



Hey guys, So I just did a problem here: (its find wavelength of particle with mass)
https://www.physicsforums.com/showthread.php?t=596936

But I need to figure out how to find the wavelength of a Photon with no mass.

I know the formula I need is this: wavelength = c/f = hc/Energy

BUT... What would be a general question that would ask this? What variable would be given, as in the problem I listed above trying to find the wavelength of a particle with mass, I was given the speed, so I could then plug into equation.

What would I be given to ask to find the wavelength of a photo with no mass?

Much thanks!





Homework Equations





The Attempt at a Solution

 
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  • #2
As far as I can think at the moment, a problem might provide any of the following types of information and ask you to find the wavelength:
  • frequency
  • photon energy
  • photon momentum
  • frequency and refractive index, if the photon is not traveling in vacuum
  • frequency and speed, if the photon is not traveling in vacuum
  • details of a diffraction or interference experiment
 

FAQ: How to find the wavelength of a Photon with no mass?

What is a photon and why does it have no mass?

A photon is a fundamental particle of light that carries energy. It has no mass because it is a type of particle known as a boson, which does not interact with the Higgs field that gives other particles their mass.

How is the wavelength of a photon calculated?

The wavelength of a photon is calculated using the equation λ = c/f, where λ is the wavelength, c is the speed of light (3 x 10^8 m/s), and f is the frequency of the photon.

Can the wavelength of a photon be measured?

Yes, the wavelength of a photon can be measured using techniques such as diffraction or interference. These methods involve passing the photon through a slit or grating and measuring the resulting interference pattern.

How does the wavelength of a photon affect its energy?

The wavelength of a photon is inversely proportional to its energy, meaning that shorter wavelengths correspond to higher energies. This relationship is described by the equation E = hf, where E is the energy, h is Planck's constant (6.626 x 10^-34 joule seconds), and f is the frequency of the photon.

Is the wavelength of a photon constant?

Yes, the wavelength of a photon is constant and is determined by the energy of the photon. This is known as the wave-particle duality of light, where light behaves as both a wave and a particle simultaneously.

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