our Grandma Pauline has just won a microwave oven in a radio contest. When it arrives at her house, it sits on her counter, unused, for a month. One afternoon, when you visit her, she tells you that she is afraid to use it because "If I stand too close, I'll get radiated!" Explain to your Grandma the difference between the waves that are used in a microwave oven and the dangerous nuclear radiation she fears.