Did you ever wonder how a microwave oven operates? Actually , it is quite simple. The oven sends invisible waves of energy. called microwaves,into the food . The waves cause the water inside the food to heat up . As this water heats up ,the food cook from the inside out. A regular oven ,of course ,works differently .one reason is that the food cooks from the outside in.First the outside gets hot .Then , as time goes by ,more and more ofthe inside of the food cooks. This is one of the reason why regular ovens take so much time to cook things.Many people are finding that "inside out" is the right way to go