Evangelista Torricelli

wind difference air temperature density region earth

"winds are produced by differences of air temperature, and hence density, between two regions of earth."

— Evangelista Torricelli (1608-1647)

ocean air bottom

"Living submerged at the bottom of an ocean of air."

— Evangelista Torricelli (1608-1647)

nature vacuum resistance

"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."

— Evangelista Torricelli (1608-1647)

air weight mercury pressure

"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?"

— Evangelista Torricelli (1608-1647)

geometer distance means intellect infinite world

"The Geometer has the special privilege to carry out, by abstraction, all constructions by means of the intellect. Who, then, would wish to prevent me from freely considering figures hanging on a balance imagined to be at an infinite distance beyond the confines of the world?"

— Evangelista Torricelli (1608-1647)