apparent time

SEE SYNONYMS FOR apparent time ON THESAURUS.COM

noun

Astronomy. local time measured by the hour angle of the sun.

Compare mean solar time.

Origin of apparent time

First recorded in 1685–95

Words nearby apparent time

apparently, apparent magnitude, apparent movement, apparent solar day, apparent temperature, apparent time, apparent wind, apparition, apparitor, appassionato, appd.

Scientific definitions for apparent time

apparent time

Solar time as measured by the Sun's actual position with respect to an observer's local meridian and equal for any observer to the hour angle of the Sun at that location. Sundials register apparent time, which differs continuously with the observer's longitude and is not standardized across a time zone. Each degree of longitude represents a difference of four minutes in apparent time. Because of irregularities in Earth's orbit and the tilt of its axis, a day as measured by apparent time varies somewhat in length throughout the year. Also called apparent solar time♦ The moment when the Sun crosses an observer's local meridian is called the apparent noon. Compare local mean time. See more at mean time solar time.

单词	apparent time
释义	apparent time SEE SYNONYMS FOR apparent time ON THESAURUS.COM noun Astronomy. local time measured by the hour angle of the sun. Compare mean solar time. Origin of apparent time First recorded in 1685–95 Words nearby apparent time apparently, apparent magnitude, apparent movement, apparent solar day, apparent temperature, apparent time, apparent wind, apparition, apparitor, appassionato, appd. Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Words related to apparent time true time Scientific definitions for apparent time apparent time Solar time as measured by the Sun's actual position with respect to an observer's local meridian and equal for any observer to the hour angle of the Sun at that location. Sundials register apparent time, which differs continuously with the observer's longitude and is not standardized across a time zone. Each degree of longitude represents a difference of four minutes in apparent time. Because of irregularities in Earth's orbit and the tilt of its axis, a day as measured by apparent time varies somewhat in length throughout the year. Also called apparent solar time♦ The moment when the Sun crosses an observer's local meridian is called the apparent noon. Compare local mean time. See more at mean time solar time. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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apparent time

noun

Origin of apparent time

Words nearby apparent time

Words related to apparent time

Scientific definitions for apparent time