How big is a typical atom? Take the width of a human hair and divide it by two, then divide that by two, then divide that by two, and so on, until you have reduced each half by half a total of 20 times. That will be the width of a typical atom, roughly one millionth the thickness of a human hair. Now, just for fun, divide the width of the atom in half 13 times and you will have the width of its nucleus. Between the nucleus and the orbits of the electrons there is nothing. A whole lot of nothing. You, your furniture, water, rocks, your pets, diamonds, iron, everything you’re familiar with is almost entirely composed of emptiness.