 Matter and energy, because matter and energy are really the same thing, they can simply go back and forth between each other. So yes, you have to take into account the spin of an object when you weigh it. By the way, it's very tiny. So for all intents and purposes, you can weigh yourself without having to spin the scale. Okay, let's move right along to the next listener phone call. Hello, my name is Jeff Hartman.