# Norton's dome

> English word · Proper noun

## Definitions
1. A thought experiment that exhibits a nondeterministic system within the bounds of Newtonian mechanics. It involves an idealized particle initially sitting motionless at the apex of an idealized radially symmetrical frictionless dome of a certain form. The particle may, after an arbitrary period of time, slide down the dome in an arbitrary direction, contrary to intuition.

## Etymology
Devised by John D. Norton in 2003.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/norton-s-dome