Author Question: A statement you will sometimes hear people say is that a day is not 24 hours but is really 23 hr. 56 ... (Read 79 times)

APUS57 · **on:** Feb 28, 2020

Question 1

The apparent path of the Sun upon the celestial sphere is called the ________.
◦ ecliptic
◦ sidereal
◦ precession
◦ declination
◦ parallax

Question 2

A statement you will sometimes hear people say is that a day is not 24 hours but is really 23 hr. 56 min. and 4 sec. What does this refer to?
◦ This is sidereal time, not solar time; a solar day is 24 hours.
◦ It is just an urban myth; the day really is 24 hours long.
◦ The original definition of the hour was off, and with more accurate atomic clocks we now realize the real day is this length.
◦ Our clocks drift that much each day, and we average out the affect with period time shifts, like leap years and leap seconds.

kristenb95 · **Reply #1 on:** Feb 28, 2020

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