In order to arrive at a number that defines distances (for example, with units in meters), physicists multiply Planck’s constant with two other constants: the maximum speed of the universe (c, the speed of light) and the strength of gravity (G). If we combine these in a particular way, we can come up with a number that has units of distance.117 This number turns out to be very, very small: 10−35 meters, or 0.00000000000000000000000000000000001 meters.
