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Microwaves? watch

    • Thread Starter

    I am good at maths, but I am shocking at physics, and there is a potential danger I might fail Alevel physics, hence I am extremely worried. I need to make clear about 2 thigns about microwaves:

    1. How do you do a double slit interference experiment using microwave?

    2. How do you show microwaves from a certain source is polarised?

    1. i cant remember something to do with 2 patches forming double the amplitude away from each other????
    2. surely you could just put another polarising filter 90degrees to the other! if no waves penetrate the past polarising lenses then it is clear that its polarised!
    im in the same boat as u maths = easy physics = wtf!

    Double slit expt with microwaves:
    1. Use a microwave transmitter with a double slit barrier.
    2. Slits should be able 2-8 cm apart.
    3. Move a detector connected to an ammeter/loudspeaker through an arc a small distance away from the barrier.
    4. Should get a pattern of max/min/max/min with a max at a point equidistance from the two slits.

    Showing it is polarised:
    1. Align transmitter/detector + ammeter to get max reading
    2. Rotate the detector through 90 degrees
    3. Intensity received should decrease, to a minimum at 90 degrees to original orientation.

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