A microwave oven, often colloquially shortened to microwave, is a kitchen appliance that heats food by bombarding it with electromagnetic radiation in the microwave spectrum causing polarized molecules in the food to rotate and build up thermal energy in a process known as dielectric heating.

Soon there won’t be a huge demand for a solo microwave now that they’ve created Speed ovens. The steam oven, however, is a great one for reheating and baking but not the best for popcorn and warming up baby bottles.
