How do a CD laser and a DVD laser differ if at all?

Subject: How do a CD laser and a DVD laser differ if at all?

Date: Sat Jan 26 02:45:26 2002
Posted by Krystofer
Grade level: 10-12 School: none
City: greenville State/Province: texas Country: USA
Area of science: Physics
ID: 1012031126.Ph

Message:


My friends and i are having a bit of a spat online over this very question.  I 
have been told (and tend to agree with my limited physics knowledge) that a DVD 
laser is at a higher (or at least diff. frequency).  My friend seems to think 
that its actually more powerful.  we tried to explain to him that a higher 
frequency doesn't mean more power at all, but he wont listen. Are we wrong, or 
is he?

Re: How do a CD laser and a DVD laser differ if at all?

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