Answer :
Final answer:
The original name for the microwave oven was 'Radarange', based on radar technology used in World War II, and microwaves function by causing water molecules in food to rotate and heat up.
Explanation:
The original name for the microwave oven was Radarange. This name stemmed from the use of radar technology during World War II, which was adapted for cooking purposes. Most kitchen microwaves today operate at a frequency of 2.45 × 10⁹ Hz, which is absorbed by water molecules in food, causing them to rotate faster and heat up. The microwaves' shorter wavelengths compared to radio waves make them suitable for heating food, as they can produce smaller hot spots that uniformly cook or warm up the food.
