Calculate angle of reflection.

  • Thread starter Thread starter EinsteinKid
  • Start date Start date
  • Tags Tags
    Angle Reflection
Click For Summary
A user seeks assistance with calculating the angle of reflection for a laser beam hitting a compact disc at normal incidence, with specific parameters given. Forum members advise that the question should be posted in the Homework Help Section and emphasize the importance of including relevant equations and any attempts at a solution. They remind the user to adhere to forum rules and guidelines for posting. The discussion highlights the community's willingness to guide rather than complete homework tasks. Proper posting etiquette is crucial for receiving help effectively.
EinsteinKid
Messages
2
Reaction score
0
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.
 
Science news on Phys.org
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:

Similar threads

Brewster's angle and the intensity of reflected light
  • · Replies 4 ·
Replies
4
Views
2K
Calculating the degree of polarization of reflecting light
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Simple math model for a Particle Image Velocimetry system
  • · Replies 6 ·
Replies
6
Views
812
How Does Wavelength Affect Reflection Angles in Gratings?
  • · Replies 5 ·
Replies
5
Views
2K
Small Reflective Projector LCD
  • · Replies 11 ·
Replies
11
Views
3K
JavaScript How to reflect the ball at an angle?
  • · Replies 11 ·
Replies
11
Views
2K
Do antireflective coats increase the angle of total internal reflectio
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad Interference by reflection on a CD
  • · Replies 2 ·
Replies
2
Views
1K
High School Calculating non-dielectric reflectance without using complex numbers
  • · Replies 6 ·
Replies
6
Views
1K
Undergrad Formula For Calculating Field Angle (Beam Angle) of Light?
  • · Replies 2 ·
Replies
2
Views
2K