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Single Idea 21167

[catalogued under 27. Natural Reality / A. Classical Physics / 1. Mechanics / d. Gravity]

Full Idea

Gravity is an odd sort of force, not least because it only ever works one way. Electromagnetism attracts and repels, but with gravity there are only positive masses always attract.

Gist of Idea

Gravity is unusual, in that it always attracts and never repels


New Scientist writers (Why the Universe Exists [2017], 05)

A Reaction

This leads to speculation about anti-gravity, but there is no current evidence for it.

Book Reference

New Scientist writers: 'Why the Universe Exists' [John Murray 2017], p.99