Living submerged at the bottom of an ocean of air.
The Geometer has the special privilege to carry out, by abstraction, all constructions by means of the intellect.
Is it a surprise that into the vessel, in which the mercury has no inclination and no repugnance, not even the slightest, to being there, it should enter and should rise in a column high enough to make equilibrium with the weight of the external air which forces it up?
Many have argued that a vacuum does not exist, others claim it exists only with difficulty in spite of the repugnance of nature; I know of no one who claims it easily exists without any resistance from nature.
winds are produced by differences of air temperature, and hence density, between two regions of earth.