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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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Sandy,
that is ingenious thinking, but I think there are practical factors
that will confound it.
Is the stuff you are heating uniform?
Your magnetron is not the same as a radar magnetron; it puts
out a range of wavelengths, not exactly 2,450 MHz.
Also, it is not phase locked like a radar magnetron so there are
plenty of harmonics.
And, you can't be sure how the waves are propagating in the
cavity of the microwave; there is no reason why they must
bounce back and forth nicely between the walls and at right
angles to them. They can be angling from corner to corner
and edge to edge, so that the projections onto the horizontal
plane do not have to be half wavelengths ....
All best, Peter Anderson
(once upon a time a radar technician,
but now thoroughly out of date.)
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