Originally posted by mtthw
I like this approach:
What is an h2g2 microwave? Did you see that in the piece? Also has an h2g2 kitchen.
Also, if you don't know the frequency of the microwave, you are screwed.
Here is a bit of a wiki article on microwave ovens:
The frequencies used in microwave ovens were chosen based on two constraints. The first is that they should be in one of the industrial, scientific, and medical (ISM) frequency bands set aside for non-communication purposes. Three additional ISM bands exist in the microwave frequencies, but are not used for microwave cooking. Two of them are centered on 5.8 GHz and 24.125 GHz, but are not used for microwave cooking because of the very high cost of power generation at these frequencies. The third, centered on 433.92 MHz, is a narrow band that would require expensive equipment to generate sufficient power without creating interference outside the band, and is only available in some countries. For household purposes, 2.45 GHz has the advantage over 915 MHz in that 915 MHz is only an ISM band in the ITU Region 2 while 2.45 GHz is available worldwide.
So you can have microwaves with three different frequencies and if you arbitrarily pick the wrong one, guess what...
Also, I am an RF guy and wonder how accurate that 2.45 ghz or 915 mhz is in any given oven. Could it go to 2 ghz for instance? If so there is another variable to consider. It would pay to have an accurate frequency counter but that puts it pretty much out of the running for a kitchen experiment, eh.