| Certain words mean different things in different contexts, and in this case "nothing" is a matter of scale. On the scale of human eyesight, you could indeed have an empty box that contains nothing. On the molecular level that's less likely. If I can see the box is empty that means there are light particles in the box. There's also oxygen and hydrogen, among thousands of other molecules. Drop down to the sub-atomic scale and I doubt you could ever have an empty space anywhere. |