rapidity meaning
ENWRapidity
- In relativity, rapidity is an alternative to speed as a measure of rate of motion. On parallel velocities (say, in one-dimensional space) rapidities are simply additive, unlike speeds at relativistic velocities.
- Using the inverse hyperbolic function artanh, the rapidity φ corresponding to velocity v is φ = artanh(v / c). For low speeds, φ is approximately v / c.
- Mathematically, rapidity can be defined as the hyperbolic angle that differentiates two frames of reference in relative motion, each frame being associated with distance and time coordinates.
- NounPLrapiditiesSUF-ity
Definition of rapidity in English Dictionary
- Part-of-Speech Hierarchy
- Nouns
- Countable nouns
- Countable nouns
- Nouns
Other Vocabulary
Source: Wiktionary
Grammatically, this word "rapidity" is a noun, more specifically, a countable noun.