Schwerkraft und Traegheit / Hahntisch / internet Dialog

Schwerkraft und Traegheit / Hahntisch / internet Dialog

On the Shoulders of Giants and Dwarfs

Newton:

It’s like this: actually, the Moon would like to move straight on, because that is its natural movement — always straight on and always constant for all eternity, or at least until some external force stops it from moving in this way. This is what I have called the principle of inertia. Then, gravity comes along and pulls the Moon down a little. At the same time, however, the Moon strives to go straight on, and then falls down a little bit more towards the Earth because of its gravity. The result of this zigzagging, which happens so fast that you don’t see it, is the Moon’s near-circular orbit.


Aristotle:

Why keep it simple when you can have it complicated! It is as though the Moon were a slave and gravity a sort of shackle.

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