Copernicus (1473-1543) was not the first person to claim that the Earth rotates around the Sun. In Western civilization, the ancient Greek astronomer Aristarchus of Samos is generally credited with being the first person to propose a Sun-centred hypothesis of the universe (heliocentric). In the...
The invention of the gyroscope is usually attributed to the French physicist Jean-Bernard-Leon Foucault in1852. He certainly invented the word and also used his gyroscope to demonstrate the rotation of the Earth. Who named the gyroscope? Mechanical gyroscopes are based on a principle discovered in...
Who discovered Mars? That's a trick question: Because the planet is visible to the naked eye, humans have been watching our rusty neighbor for thousands of years, and there's no way to track down the name of the long-dead observer who first noticed its reddish glow. But just because ...
转动身体,上杆送杆,试着维持身体稳定性。 In order to realize locks in the core the feeling, tries to shrink the lower abdomen simultaneously to do several times tries to wield the pole. Rotates the body, on the pole delivers the pole, is trying the maintenance body stability.[translate] ...
“I hold that the Sun is located at the center of the revolutions of the heavenly orbs and does not change place, and that the Earth rotates on itself and moves around it. Moreover … I confirm this view not only by refuting Ptolemy’s and Aristotle’s arguments, but also by producing...