Using Blue Laser Light for CD Players: Manufacturing Implications

AI Thread Summary
The discussion centers on the implications of using blue laser light instead of red laser light in CD players. The primary change required in manufacturing would relate to the different wavelengths of the lasers, as blue lasers have shorter wavelengths than red ones. This shift could potentially enhance data storage capacity and reading precision. Participants are encouraged to research how CDs function and are produced to better understand these implications. Understanding these manufacturing changes is essential for adapting to new laser technologies in CD players.
addiec206
Messages
1
Reaction score
0

Homework Statement


Currently cd players use laser light in the red portion of the spectrum. What changes would be required in the manufactering of cds if blue laser light were to be used?


Homework Equations




The Attempt at a Solution


Well I'm pretty sure it has something to do with the wavelengths, but I have no idea what the actual answer is! Help please?
 
Physics news on Phys.org
welcome to pf!

hi addiec206! welcome to pf! :smile:
addiec206 said:
Currently cd players use laser light in the red portion of the spectrum. What changes would be required in the manufactering of cds if blue laser light were to be used?
…
Well I'm pretty sure it has something to do with the wavelengths, but I have no idea what the actual answer is! Help please?

yes, it's the wavelength

now you need to look up how cds work, and how a cd is made :wink:

tell us what you find :smile:​
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Describing lasers, their use, and link to science
Replies
6
Views
2K
Find λ of light using a laser beam and a diffraction grating
Replies
2
Views
2K
Laser safety / measuring errors question
Replies
7
Views
2K
How does Band Gap and Refractive index relate to Wavelength?
Replies
2
Views
2K
Raman Spectroscopy Setup Not Functioning as Intended
Replies
3
Views
1K
A The coherence length is much longer than the manufacturer claims
Replies
10
Views
2K
Fizeau's Exp: Calculating Speed of Light w/ Red Laser
Replies
9
Views
3K
How Can Changing Variables in a Laser Experiment Alter the Interference Pattern?
Replies
6
Views
7K
What Is the Wavelength of a Laser Used in CD Data Retrieval?
Replies
1
Views
2K
White light interference pattern and its resolution criteria
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top