دیکشنری فارسی

ephemeris time

معنی فارسی

زمان نجومي زمان تقويمي

ریشه و کاربرد

ریشه

From Latin 'ephemeris', from Greek 'ephēmeros' meaning 'daily' and Middle English 'time'. First known use in English in the 20th century.

مثال

  • Ephemeris time was used to calculate the positions of celestial bodies.
  • The concept of ephemeris time was replaced by dynamical time in 1984.
  • Ephemeris time was based on the motion of the Earth around the Sun.

ترکیب‌های رایج

Astronomical ephemeris time Celestial ephemeris time

تعریف انگلیسی

noun
  1. (astronomy) a measure of time defined by Earth's orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earth's motions

واژه‌های دیگر با معنی «زمان نجومي»

همین دیکشنری روی گوشی

همهٔ ۲۹۱٬۲۱۲ واژه، بدون نیاز به اینترنت.

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