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Published on Jun 18, 2011
This is an experiment that I devised to help visualize where the hot spots are inside of a microwave oven. I came across some thermal paper yesterday and decided to put it to use.
The microwaves inside of a microwave oven are electromagnetic waves and are reflected inside the oven. These waves interact with each other and form interference patterns that result in areas that are intense and areas that have essentially zero microwave energy. The thermal paper forms a thermograph of the interference pattern.
I performed the experiment three times, once with the thermal paper at the bottom of the oven, once with it two inches above the bottom, and once with it on the carousel.