proper acceleration
Fetched 2026-10-26 (cache).
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Noun
- {{lb|en|physics}} The acceleration felt by an object, as opposed to the coordinate acceleration. For example the acceleration of an object at the surface of the Earth is 9.81 m/s<sup>2</sup> upwards, but has no coordinate acceleration. The proper acceleration of an object is [[w:Lorentz invariant|Lorentz invariant]].
Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.