 Heat transfer happens to us every day. It always moves from hot objects to colder ones. Let's talk about radiation. This is defined as electromagnetic waves traveling through space. When electromagnetic waves come in contact with an object, the waves transfer the heat to that object. It's heat traveling in the form of visible and non-visible light. Some examples of radiation include feeling warm while standing next to a campfire, reheating that slice of pizza in your microwave, and turning on a light so you can find your phone.