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Single Idea 15958

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

Full Idea

Newton's principle of inertia implies a rejection of the Aristotelian idea of natural states to which things naturally return.

Gist of Idea

Inertia rejects the Aristotelian idea of things having natural states, to which they return

Source

report of Isaac Newton (Principia Mathematica [1687]) by Peter Alexander - Ideas, Qualities and Corpuscles 02.3

Book Ref

Alexander,Peter: 'Ideas, Qualities and Corpuscles' [CUP 1985], p.57


A Reaction

I think we can safely say that Aristotle was wrong about this. Aristotle made too much (such as the gravity acting on a thing) intrinsic to the bodies, when the whole context must be seen.


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]
Inertia rejects the Aristotelian idea of things having natural states, to which they return [Newton, by Alexander,P]
Newton's Third Law implies the conservation of momentum [Newton, by Papineau]
2: Change of motion is proportional to the force [Newton]
3: All actions of bodies have an equal and opposite reaction [Newton]
1: Bodies rest, or move in straight lines, unless acted on by forces [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]