Food & Cooking
A microwave oven can be a real time saver by reducing the amount of time it takes to prepare a meal. The microwave oven cooks food faster than a conventional oven by using short, high-frequency energy waves similar to TV, radar and radio waves. These waves are created by a magnetron, a part of your microwave oven. These waves cause molecules inside the food to move rapidly and create heat. It is this heat that cooks the food.
"SP525 Your Microwave Oven - A Real Time Saver," The University of Tennessee Agricultural Extension Service, SP525-10M-1/99 E12-2015-00-146-99, http://trace.tennessee.edu/utk_agexfood/15