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词汇 sidereal time
释义

Definition of sidereal time in English:

sidereal time

noun
mass nounAstronomy
  • Time reckoned from the motion of the earth (or a planet) relative to the distant stars (rather than with respect to the sun).

    〔天文〕恒星时

    Example sentencesExamples
    • The relationship between ESP scores and personality factors (Myers - Briggs Type Indicator preference scores), geomagnetism, local sidereal time, sender-receiver pairings, and target type was also examined.
    • Two clocks were used, one keeping mean time i.e. 24 hours a day, the other sidereal time of 23 hours, 56 minutes and 4 seconds to the day (the length of time until the stars reach the same position as the previous day).
    • Two physical variables that have been linked to free-response ESP scores, geomagnetism and local sidereal time, are additionally examined.
    • Flamsteed used the star Sirius as a timekeeper correcting the sidereal time obtained from successive transits of the star into solar time, the difference of course being due to the rotation of the Earth round the Sun.
    • Today we would use a telescope in an accurately-calibrated equatorial mounting to find the planet's altitude and azimuth (compass-bearing) and then, given the correct sidereal time, its latitude and longitude could be calculated.

Definition of sidereal time in US English:

sidereal time

noun
Astronomy
  • Time reckoned from the motion of the earth (or a planet) relative to the distant stars (rather than with respect to the sun).

    〔天文〕恒星时

    Example sentencesExamples
    • Flamsteed used the star Sirius as a timekeeper correcting the sidereal time obtained from successive transits of the star into solar time, the difference of course being due to the rotation of the Earth round the Sun.
    • Two clocks were used, one keeping mean time i.e. 24 hours a day, the other sidereal time of 23 hours, 56 minutes and 4 seconds to the day (the length of time until the stars reach the same position as the previous day).
    • Two physical variables that have been linked to free-response ESP scores, geomagnetism and local sidereal time, are additionally examined.
    • The relationship between ESP scores and personality factors (Myers - Briggs Type Indicator preference scores), geomagnetism, local sidereal time, sender-receiver pairings, and target type was also examined.
    • Today we would use a telescope in an accurately-calibrated equatorial mounting to find the planet's altitude and azimuth (compass-bearing) and then, given the correct sidereal time, its latitude and longitude could be calculated.
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