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9 votes

What sort of science is satirized in Hogarth's Weighing House?

Clubbe's Physiognomy, where the etching is the frontispiece, is accessible on Internet Archive. Clubbe's target was the so-called pneumatology ("science of spirit"), a popular in the 18th ...
Conifold's user avatar
  • 77.1k
8 votes

Why didn't Einstein propose any metric solution to his equations?

The other answer by LolloBoldo is correct. But just to give some evidence, in the original 1915 paper Einstein explicitly states: The field equations (16a) then take, as a first approximation, the ...
Eletie's user avatar
  • 181
5 votes

Did Newton's leap to understanding gravity involve cannonball thought experiments on a smooth Earth?

It is because it was moved to another book A Treatise of the System of the World (also by Isaac Newton). From Wikipedia's Newton's cannonball: Newton's original plan for Philosophiæ Naturalis ...
Mauricio's user avatar
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5 votes

What is the relationship between the Newtonian laws of motion and gravity and the Keplerian laws of planetary motion?

Newton's law of gravity is equivalent to Kepler's laws in the following sense: for two bodies, assuming attraction by a central force if the force obeys Newton's law then the motion obeys Kepler's ...
Alexandre Eremenko's user avatar
4 votes

Where does the famous equation $F = G\cfrac{m_1m_2}{r^2}$ come from?

The language in Newton’s (translated) work is antiquated by modern standards. Saying that the force is “reciprocally as the square of the distance” means, in more modern language, that the force is ...
J. Murray's user avatar
  • 156
4 votes

Why didn't Einstein propose any metric solution to his equations?

The question, as asked, implicitly assumes an overly advanced state of the art for physics and astronomy in 1915 GR was an elaboration of special relativity (SR), but SR had very little direct ...
kfgjhgfkhglkfdjh's user avatar

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