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Single Idea 19673

[filed under theme 27. Natural Reality / A. Classical Physics / 1. Mechanics / b. Laws of motion ]

Full Idea

Galileo conceives of movement in mathematical terms. ...In doing so, he uncovered, beyond the variations of position and speed, the mathematical invariant of movement - that is to say, acceleration.

Gist of Idea

Galileo mathematised movement, and revealed its invariable component - acceleration

Source

report of Galileo Galilei (Two Chief World Systems [1632]) by Quentin Meillassoux - After Finitude; the necessity of contingency 5

Book Ref

Meillassoux: 'After Finitude: the necessity of contingency', ed/tr. Brassier,R [Bloomsbury 2008], p.115


A Reaction

That is a very nice advert for the mathematical physics which replaced the Aristotelian substantial forms. ...And yet, is acceleration some deep fact about nature, or a concept which is only needed if you insist on being mathematical?


The 10 ideas with the same theme [basic principles constraining all movement]:

If something is pushed, it pushes back [Aristotle]
Galileo mathematised movement, and revealed its invariable component - acceleration [Galileo, by Meillassoux]
Descartes said there was conservation of 'quantity of motion' [Descartes, by Papineau]
Newton's Third Law implies the conservation of momentum [Newton, by Papineau]
Inertia rejects the Aristotelian idea of things having natural states, to which they return [Newton, by Alexander,P]
1: Bodies rest, or move in straight lines, unless acted on by forces [Newton]
3: All actions of bodies have an equal and opposite reaction [Newton]
2: Change of motion is proportional to the force [Newton]
Galileo refuted the Aristotelian theory that heavier objects fall faster [Okasha]
In modern physics the first and second laws of motion (unlike the third) fail at extremes [Ingthorsson]