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1
The Ever-Changing Sky: A Guide to the Celestial Sphere
But the sidereal day is the fundamental astronomical time unit. 3.14. Sidereal
time These two definitions of the day form the bases for two different kinds of time,
solar time and sidereal time. Solar time was defined in Section 3.7 as the hour ...
2
The Amateur Astronomer's Introduction to the Celestial Sphere
One sidereal day is the length of time required for a particular star to “move
around the Earth” and return to the local meridian. The Earth must rotate about 1◦
farther to get the Sun to return to the local meridian, as seen in Figure 4.31. One
solar ...
A^JLniauc PI difference between a solar day and a sidereal day is due to a
planet's motion in its orbit around the Sun. During the passage of one sidereal
day, Earth moves l/365th of the way in its orbit around the Sun. This movement of
Earth ...
4
Glossary of Mapping Science
The length of the sidereal day is subject to slight irregularities on account of small
differences between the positions of the true equinox, which is affected by
precession and nutation, and the mean equinox, which is affected by precession
only.
American Society of Civil Engineers, 1994
The rotation rate is slowly decreasing, and thus the length of the sidereal day is
increasing. In addition to the smooth slowing down irregular variations of the
order of one millisecond have been observed. Unfortunately, also the sidereal
time ...
A sidereal day is the time interval taken by the vernal equinox in its one apparent
revolution about the earth. Since the period of 366.2422 sidereal days is equal to
365.2422 solar days, a sidereal day is shorter than the solar day. Thus, we ...
7
Encyclopædia Americana: A Popular Dictionary of Arts, ...
1827). Sidereal Magnetism, with the believers in animal magnetism (q. v.),
denotes the beneficial influence of the stars upon patients. Sidereal Time. A
sidereal day is the time during which the whole body of fixed stars appears to
revolve round ...
Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford, 1832
8
The TSQL2 Temporal Query Language
An altogether different method of measurement is used to determine a sidereal
day, yet another clock based on the Earth's rotation. One sidereal day is one
rotation of the Earth with respect to a distant star (not the Sun). It is the time
between ...
Richard T. Snodgrass, 1995
9
Practical Astronomy with Your Calculator
During this period, the Earth makes about 366^ revolutions abouts its own axis;
there are therefore this many sidereal days in the year. Each sidereal day is thus
slightly shorter than the solar day, 24 hours of sidereal time corresponding to 23h
...
Peter Duffett-Smith, 1988
10
Encyclopaedia Britannica: Or, A Dictionary of Arts, ...
Or, A Dictionary of Arts, Sciences, and Miscellaneous Literature, Enlarged and
Improved. Apparent Mutions of the Heavenly lindics. 55 Astronomical duy. 5«
Sidereal day. 57 U ays vary i:i length. Appurent Motions of tie Heavenly Bodies.
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «SIDEREAL DAY»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
sidereal day w wiadomościach.
Time Relativity in the Qur'an
Another type of day is the Sidereal Day (from Latin word 'sidus' meaning star), the time elapsed between two successive meridian crossings of a fixed star, and ... «Onislam.net, Kwi 15»
NPR corrects: An Earth day actually takes 24 hours
While the article correctly notes that a sidereal day — the time it takes a celestial body to rotate relative to a fixed point — is actually slightly shorter than 24 hours ... «Poynter.org, Kwi 15»
Why Comedy Central is sticking by Trevor Noah
... comic who was tapped to succeed Jon Stewart at The Daily Show, has gone from "progressive icon" to MSNBC's villian of the hour in less than a sidereal day. «The Week Magazine, Kwi 15»
Star Power: Spring's Night Sky Dazzles with Constellations Aplenty
... the sky, we would see that the times of their rising and setting occurs 4 minutes earlier compared to the previous night; astronomers call this a sidereal day. «Space.com, Mar 15»
Watches With Star Quality
A sidereal day's duration is 23 hours, 56 minutes, 4.0916 seconds. This is how long it takes the Earth to make one rotation. Those three minutes-plus can be ... «Wall Street Journal, Lis 14»
World's 'most complicated' Patek Philippe gold watch sells for record …
One of the Supercomplication's more obscure features is a sidereal time dial, which tracks the Earth's rate of rotation in relation to fixed stars. A "sidereal day" ... «CNN, Lis 14»
The spooky sounds of space
After tracking it carefully, he realised that was occurring not every 24 hours, but every 23 hours and 56 minutes -- the length of a sidereal day, the time it takes for ... «CNET, Sie 14»
Get out and enjoy the extra long summer days
At this time of year, the days really arelonger. The stars apparent circle in the sky is very constant, about 23:56 minutes each sidereal day. The extra four minutes ... «Florida Today, Cze 14»
MESSENGER Surpasses 200000 Orbital Images of Mercury
The mission marks three additional milestones today: the spacecraft concludes its 12th Mercury year in orbit, its 18th Mercury sidereal day in orbit, and its 6th ... «Phys.Org, Lut 14»
Another 31556941 Seconds Around the Sun? Happy Recycled …
You stand on the Earth and define a day as the time it takes for a star to go from directly overhead to directly overhead again: a sidereal day. That takes 23 hours ... «Slate Magazine, Sty 14»
