Help with light, wavelength, and photons

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Discussion Overview

The discussion revolves around a physics question related to the properties of light, specifically focusing on the energy of red light emitted from a Helium-Neon LASER. Participants are addressing calculations involving the speed of photons, the wavelength of the emitted light, and comparisons between the speeds of different types of photons.

Discussion Character

  • Homework-related

Main Points Raised

  • One participant asks for help calculating the speed of red photons and the wavelength of these photons, expressing uncertainty about their answers.
  • Another participant requests that the original poster share their work to provide more targeted assistance.
  • A different participant confirms they have calculated the wavelength but seeks validation of their answer.
  • Participants emphasize the need for the original poster to demonstrate their thought process to receive help on the calculations.

Areas of Agreement / Disagreement

There is no consensus on the correctness of the wavelength calculation, as participants have not seen the original poster's work. The discussion remains unresolved regarding the calculations for parts (a) and (c).

Contextual Notes

Participants have not provided specific assumptions or methods used in their calculations, which may affect the ability to validate the answers.

jewilki1
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I need help with parts of this question.
6. The red light emitted from a Helium-Neon LASER has an energy of 3.15 x 10^-19 J.
a. At what speed do "red photons travel? I need help with this one.

B. calculate the wavelength of these photons.
I got 6.31424 x 10^-7m. Is this correct.

c. comment on the speeds of the photons from the LASER versus the X-ray photons. I need help with this one.

I am trying to study for a quiz and really need help.

Thanks.
 
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If you show us what you have tried so far (work) and where you are getting stuck, we can point you in a successful direction.
 
I don't know how to do a and c, but I got the answer to b. IS b correct?
and can you help with a and c. Thanks
 
We can't tell you if (b) is correct, unless you show how you got that number.

As for (a) and (c), you have to show some effort. What are your thoughts ?
 

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