the process by which heat is transfer from one body to another {in air} while using no medium is known as radiation or radiant energy.
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glowing
3
Three: "ray-dee-ant"
They're hardly ever equal. One of the few situations where they're equal is when you drop a weight to the ground from some height. Then, the gravitational potential energy and kinetic energy are equal when it's exactly in the middle of the drop, and the kinetic energy it has when it hits the ground is the same as the gravitational potential energy it had when you let it go.