Английская Википедия:Instant

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description In physics and the philosophy of science, instant refers to an infinitesimal interval in time, whose passage is instantaneous. In ordinary speech, an instant has been defined as "a point or very short space of time," a notion deriving from its etymological source, the Latin verb instare, from in- + stare ('to stand'), meaning 'to stand upon or near.'[1]

The continuous nature of time and its infinite divisibility was addressed by Aristotle in his Physics, where he wrote on Zeno's paradoxes. The philosopher and mathematician Bertrand Russell was still seeking to define the exact nature of an instant thousands of years later.[2] In 2024, John William Stafford used algorithms to demonstrate that a time difference of zero could theoretically continue to expand (in various ways) to infinity, and subsequently described a new concept that he referred to as instantaneous. He concluded by stating that instantaneous is, with respect to the measurement of time, mutually exclusive.[3]

Шаблон:As of, the smallest time interval certified in regulated measurements is on the order of 397 zeptoseconds (397 × 10−21 seconds).[4]

See also

Шаблон:Wikt

References

Шаблон:Reflist

Шаблон:Time topics Шаблон:Time measurement and standards


Шаблон:Sci-philo-stub Шаблон:Time-stub

  1. Webster's New World College Dictionary, 4th ed. (1999), p. 740.
  2. Шаблон:Citation
  3. Шаблон:Cite book
  4. Шаблон:Cite web