Things of interest to Bill Heyman

The Earth’s diameter is ~10^7 meters. A hydrogen atom’s diameter is ~10^-10 meters. The geometri...

Saved Jan 15, 2025

Shared by Tim Urban @waitbutwhy on X

The Earth’s diameter is ~10^7 meters. A hydrogen atom’s diameter is ~10^-10 meters. The geometric midpoint between the two is ~3 centimeters—about the size of a grape. So if you scaled a grape up to the size of the Earth, a hydrogen atom would be the size of a grape.

The Earth’s diameter is ~10^7 meters. A hydrogen atom’s diameter is ~10^-10 meters. The geometric midpoint between the two is ~3 centimeters—about the size of a grape. So if you scaled a grape up to the size of the Earth, a hydrogen atom would be the size of a grape.