What is a Microwave?

microwave

A microwave is a high-powered form of electromagnetic radiation that’s short in wavelength and frequency, compared to other radio waves. It also has a much wider range of uses, including cooking food and sterilizing tools and equipment.

Unlike lower-frequency radio waves that bounce around the globe and travel through layers of the atmosphere, microwaves don’t scatter much or change direction at all. They have a very short wavelength and a relatively wide frequency range, and they’re easily absorbed by water and other molecules.

Microwave ovens heat foods more evenly than traditional ovens by using tiny electromagnetic rays to heat the water in food molecules, which causes them to vibrate rapidly and produce heat. This heat cooks the food from the inside out, which is why you only notice the food getting hot and not the air around it.

The technology behind the microwave was developed in radar research before and during World War II. American electrical engineer Percy Spencer is generally credited with inventing the modern microwave oven in 1945, based on radar technology from his employer Raytheon.

Microwaves come in different forms for home use, including countertop models that can sit on your kitchen counter and over-the-range units that mount under your cooktop and free up valuable space. You can also get a combination model that offers both microwave and convection heating to help you bake and broil at the same time.