The chair on which I sit seems a hard fact, but I know that I sit on a nearly perfect vacuum.
The wood of the chair consists of fibres, which consist of molecules, which consist of atoms which are miniature solar systems with central nucleus & electrons for planets.
It all sounds very pretty, but it is the dimensions that matter.
The space which an electron occupies is only 1/50,000th in diameter of its distance from the nucleus; the rest of the atomic interior is empty. If the nucleus were enlarged to the size of a dried pea, the nearest electron would circle around it at a distance of about 175 yards.
A room with a few specks of dust floating in the air is overcrowded compared with the emptiness which I call a chair
Arthur Koestler
