Thursday, February 18, 2010

Can someone give me a simple clear cut answer to what is polarized light?

im studying bees and its fascinating! it mentions polarized light and i cannot seem to grasp exactly what it is. simple answers please and maybe a illustration or two? thanks. helenCan someone give me a simple clear cut answer to what is polarized light?
The easiest explanation is like u are looking though a Venetian blinds .Now it would be obvious that the light waves could pass through one way but not the other.Can someone give me a simple clear cut answer to what is polarized light?
Light that has been polarized has been altered so that it is all coming from the same direction. When light is naturally occurring it is bouncing off of all the object in view and hitting your eye at many angles. this causes glare. Polarization blocks light that comes from erroneous angles and only allows light in from a certain direction.
Draw a sine wave on a piece of paper. Now, hold the paper in your hands so the wave goes from left to right. Rotate the paper in your hand (top over bottom). This means the wave will face the ceiling, then away from you, then the floor, then you again (and every angle in between).





Normal light moving from your left to your right has waves in every possible position in this rotation.





Polarized light has all of its waves aligned so they are all in exactly the same plane.





A sine wave looks like this:


http://id.mind.net/~zona/mstm/physics/wa鈥?/a>





A decent reference page:


http://www.uwgb.edu/dutchs/petrolgy/genl鈥?/a>

No comments:

Post a Comment