|George Hadley atmospheric_sciences
George Hadley, the meteorologist of the Royal Society in London, became dissatisfied with Edmond Halley’s explanation for trade winds, particularly that differences in sunshine from morning to evening cause the easterly trade winds. Hadley’s paper, “Concerning the cause of the general trade winds,” describes how heat at the equator and a lack of heat at the poles causes air to rise to a high altitude and move toward the poles where it falls as it cools and returns near the surface moving toward the equator, and describes how the doldrums exist where northern and southern winds meet. Furthermore, Hadley was the first to realize that the rotation of the earth causes the easterlies. Points on a sphere farther from the equator rotate slower than those closer, so that air moving toward the equator will move against the earth’s rotation. Even though Hadley’s theory is too simple to explain the winds that blow and the airs that lie still, Hadley gathered evidence of the pattern and tried to model it according to physical principles.
Christopher Columbus discovered the trade winds. although he is known more for what he discovered than for his means of discovery.
A discovery can benefit no one unless put to use; it must be shared, taught, and adopted. It took fifty years for George Hadley’s paper to be rediscovered by John Dalton. Georg Ohm discovered Olm’s law forty-six years after Henry Cavendish discovered it, which James Clerk Maxwell discovered another fifty-two years after Ohm. I invented a means of harvesting energy from ambient electromagnetic waves and told only a few friends years before others showed it could be done. I and maybe many others.