Engineer Rudy Dehn tells us how a magnetron works and how it cooks food in a microwave. Mr. Dehn helped develop both the 915 Mhz and 2.45 Ghz microwave oven at General Electric in the 1960s80s. He shows us the cathode and anode and describes how microwave energy is created using a filament, magnets and resonating cavities. He takes apart a magnetron and shows us each part and what it does.