Date: Wed, 30 Oct 2002 13:03:48 -0600

Author: "Cliff Bettis"

Subject: Re: Dichroic Microwave Polarization

Post:

Andrew,

Try a null experiment: First, show by rotating the receiver you can get a
null, i.e. polarization crossed with the transmitter. Now insert a
"polarizer" and see if you can get a signal through by orienting it
properly.

Cliff
----- Original Message -----
From: "Andrew Yue"
To:
Sent: Wednesday, October 30, 2002 11:54 AM
Subject: Re: Dichroic Microwave Polarization


> A clarification,
>
> I may be comparing apples with oranges. I'm familiar with dichroic
> mirrors and lenses, but not dichroic polarizers.
>
> When I was asked questioned in class I answered rather quickly that I
> didn't believe that we were selecting specific wavelengths for
> filtering. When I should have been thinking about filtering waves by
> their orientation to the receiver.
>
> So, I thinking that I goofed by mentioning dichroic filters such as
> the glass filters on slide projectors that block/reflect the infrared
> radiation from the high intensity bulb before it can cook the slide.
>
> To make a long story short, how does one explain dichroic
> polarization with only a transmiter horn, a rotatable bar grill and a
> receiver connected to an audio amplifier?
> --
> All the Best,
>
>
> Andrew Yue
> - yue@physics.utexas.edu -
> http://www.ph.utexas.edu/~yue
> Physics Lecture Demonstration Office
> Office Hours 8AM to 4PM Mon - Fri
> Phone (512)471-5411
>

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