Calculate angle of reflection.

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    Angle Reflection
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Discussion Overview

The discussion revolves around a homework problem involving the calculation of the angle of reflection for a laser beam striking a compact disc. The problem includes specific parameters such as the wavelength of the laser and the spacing of the pits on the CD, and seeks to determine the angle at which the intensity of light will be maximized.

Discussion Character

  • Homework-related
  • Meta-discussion

Main Points Raised

  • One participant presents a homework problem regarding the angle of reflection for a laser beam on a compact disc, seeking assistance.
  • Several participants remind the original poster to follow forum rules, including posting in the correct section and providing their attempt at a solution.
  • Participants emphasize the importance of adhering to the forum's guidelines for homework help, indicating that direct solutions will not be provided.

Areas of Agreement / Disagreement

Participants generally agree on the need for the original poster to follow forum rules and provide their own work, but there is no consensus on the solution to the problem itself, as it has not been discussed in detail.

Contextual Notes

The original problem lacks a detailed attempt at a solution, which is necessary for further assistance. Additionally, the specific mathematical steps or equations relevant to the problem have not been provided.

EinsteinKid
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Hello everyone, I am new here to the physics forums. So for my first post I need some help on this problem from my homework. Here we go:

A laser beam of wavelength 632.8 nm shines at normal incidence upon the reflective side of a compact disc. The tracks of tiny pits in which information is coded onto the CD are the 160 um apart. For what angle of reflection will the intensity of light be maximum?

Any help is great appreciate, thank you.
 
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Hi EinsteinKid,

Welcome to PF!

https://www.physicsforums.com/showthread.php?t=89899

https://www.physicsforums.com/showthread.php?t=5374

This should be posted in the Homework Help Section (a moderator will probably move it for you), and posted using the template for homework help threads (which requires you to state the problem, relevant equations, and most importantly, *your attempt* at a solution so far). If you read the forum rules I linked to, you'll see that we don't do your homework for you. We will, however, help set you in the right direction if you aren't getting anywhere with your attempt.
 
cepheid said:
Hi EinsteinKid,

Welcome to PF!

https://www.physicsforums.com/showthread.php?t=89899

https://www.physicsforums.com/showthread.php?t=5374

This should be posted in the Homework Help Section (a moderator will probably move it for you), and posted using the template for homework help threads (which requires you to state the problem, relevant equations, and most importantly, *your attempt* at a solution so far). If you read the forum rules I linked to, you'll see that we don't do your homework for you. We will, however, help set you in the right direction if you aren't getting anywhere with your attempt.
cepheid

sorry about that, I was reading the rules, I knew right away I messed up. THanks for the heads up
 
Please repost your problem--along with your work so far--in the correct forum (such as https://www.physicsforums.com/forumdisplay.php?f=153").

Also, please review our posting rules, which are linked at the top of every page, and the https://www.physicsforums.com/showthread.php?t=94379".

Welcome to PF! :smile:
 
Last edited by a moderator:

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