Polarizer test

I used simple lamp directed to glossy table surface. One polarizer is in front of lamp and other is in front of lens of digital camera. Both polarizes are perpendicularly oriented to each other. How does this work? There is a theory about an angle on which the incident polarized electromagnetic waves turn reflects from surface with polarization plane turned in 90 degrees.

When light going through polarizer towards the surface, the light is polarized in one direction and when it reflects from surface it is turned by 90 degrees and those waves are filtered by another perpendicular polarizer in front of lens.

As you can see bellow in images there is no mirror reflections left.

When both polarization planes are parallel – then we see reflections

When both polarization planes are perpendicularly – then reflections are gone.
Here is a system of positioning of polarizer films explained:

Blogsphere: TechnoratiFeedsterBloglines
Bookmark: Del.icio.usSpurlFurlSimpyBlinkDigg
RSS feed for comments on this post | TrackBack URI for this post

Other Related Posts:

Fault tolerance of embedded systems

Testing pulse transformer with an oscilloscope

Z axis accelerometer MMA1220D from Freescale

DIY DOT Graffiti Painter

Sample routine of working with LPT1 port under windows XP in CPP language

This entry was posted on Sunday, April 2nd, 2006 at 9:14 pm and is filed under Electronics. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.