more from Isaac Newton

Single Idea 22954

[catalogued under 27. Natural Reality / D. Time / 2. Passage of Time / g. Time's arrow]

Full Idea

In Newton's laws of motion time is squared, so a negative value gives the same result as a positive value, which means Newtonian mechanics cannot distinguish between the two directions of time.

Gist of Idea

Newtonian mechanics does not distinguish negative from positive values of time


report of Isaac Newton (Principia Mathematica [1687]) by P Coveney / R Highfield - The Arrow of Time 2 'anatomy'

Book Reference

Coveney,P/Highfield R: 'The Arrow of Time' [Flamingo 1990], p.54

A Reaction

Maybe Newton just forgot to mention that negative values were excluded. (Or was he unaware of the sequence of negative integers?). Too late now - he's done it.