How does a microwave actually heat your food?

How does a microwave actually heat your food? There’s no flame, no glowing heating element touching your dinner, and the air inside the microwave isn’t doing the cooking. Instead, a microwave uses electromagnetic energy to transfer energy directly into the food. In this video, we follow the process from the electricity entering the microwave to the magnetron that generates microwave energy, the waves bouncing through the metal cooking chamber, and the molecules in your food absorbing that energy and turning it into heat. We’ll also explain why microwave ovens use rotating turntables, why food can heat unevenly, and one of the biggest misconceptions about microwaves: they don’t actually cook food from the inside out. According to the USDA, microwave energy penetrates food only a limited distance. In thicker foods, ordinary heat conduction still plays an important role in warming the center—which helps explain why your dinner can sometimes be scorching hot on the outside and surprisingly cold in the middle. Take Rate Research explains the hidden systems behind ordinary life. One interesting question. One clear, satisfying answer.