Using a Laser Pointer to Measure the Data Track Spacing on C

[Basilio97]

I am doing this project as my Science Fair project and I have setup the project, and took a picture of the laser will the its rays refracting from the cd and dvd. I need help putting my numbers into the equation, and solving it so i can get my data. If you want, I can show you the pictures. I need help as soon as possible please.

[hhemken]

Basilio97,

Have you searched the ScienceBuddies forums?

https://www.sciencebuddies.org/science- ... g77bgclmby

Here are a few posts I found, and there are more:

https://www.sciencebuddies.org/science- ... =29&t=3955
https://www.sciencebuddies.org/science- ... =29&t=4923
https://www.sciencebuddies.org/science- ... f=2&t=2531
https://www.sciencebuddies.org/science- ... =29&t=8132

Please let us know if you still can't find an answer to your questions.

Good luck!

Heinz Hemken

[Basilio97]

I still cannot find the solution to my problem

[hhemken]

Basilio97,

Where are you exactly in the procedure:

https://www.sciencebuddies.org/science- ... #procedure

What steps have you completed? Have you filled out the table?

Heinz Hemken

[akbarkhan]

During my days in engineering school, I remember plotting results to graph paper to get a visual sense of the data. Nowadays you can use Excel to get a better visual of the data. Think of this as a first step to developing a formal mathematical model (or equation system) as described by the other expert.

Good luck.