A microwave is a handy tool to have in your kitchen, but with the power levels and features available, it can be difficult to find the best model. Some models have functions you can’t get on others, but this often comes at a price and more powerful microwaves can use more energy.
The magnetron generates microwaves in the cooking cavity, and it’s important to clean this well after each use to ensure that the food is cooked hygienically. It also helps to keep the food from absorbing unwanted flavors or aromas from previous microwaved foods.
When the microwave rays reach your food, they’ll be absorbed by its water and fat content, which then produce heat to cook it from the inside out. This is why foods that are high in water content cook much faster in a microwave than they would on the stove. Dry materials like glass and metal, however, are not penetrated at all.
The perforated metal mesh on the front of a microwave is designed to shield the user from microwave radiation, which can be dangerous. A cooling fan is also attached to the bottom of the unit to help with this, and it turns on and off to regulate the temperature and keep the microwaves cool.