Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Manufacturing Polarization Filters
Name: Miguel
Status: Student
Grade: Other
Location: NY
Country: United States
Date: April 2007


Question:
How are polarized filters made?



Replies:
Hi Miguel,

Although I am familiar with the general principles of polarized filters (specifically the sheet polarizers known by the registered trade name of "Polaroid), I was not aware of the basic manufacturing methods of the various types of these materials. For a lot more detail that I can tell you, have a look here... http://en.wikipedia.org/wiki/Polaroid

The general principle is that a layer of long narrow crystals are laid down on a thin sheet of clear plastic, then the plastic sheet is stretched or otherwise stressed in one direction to align the crystals all in a single direction.

Regards,

Bob Wilson.



Click here to return to the Engineering Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory