"Okay. Does the oven's magnetron generate the same frequency as the speed of light?"
Do you think that English should be the official language of the United States?
Not only so, but I believe every orange ought to be an apple and every apple an orange. If I am going to directly measure the speed of light, I reckon the best thing to measure is the light itself, don't you? Why thrown in extrapolations when we can measure the real thing with a microwave, a ruler, and a chunk of chocolate?