Astronomical clock and Hour

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Difference between Astronomical clock and Hour

Astronomical clock vs. Hour

An astronomical clock is a clock with special mechanisms and dials to display astronomical information, such as the relative positions of the sun, moon, zodiacal constellations, and sometimes major planets. An hour (symbol: h; also abbreviated hr.) is a unit of time conventionally reckoned as of a day and scientifically reckoned as 3,599–3,601 seconds, depending on conditions.

Astrolabe

An astrolabe (ἀστρολάβος astrolabos; ٱلأَسْطُرلاب al-Asturlāb; اَختِرِیاب Akhteriab) is an elaborate inclinometer, historically used by astronomers and navigators to measure the inclined position in the sky of a celestial body, day or night.

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Astronomy

Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.

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British Museum

The British Museum, located in the Bloomsbury area of London, United Kingdom, is a public institution dedicated to human history, art and culture.

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Clock

A clock is an instrument to measure, keep, and indicate time.

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Daytime

On Earth, daytime is roughly the period of the day during which any given point in the world experiences natural illumination from especially direct sunlight.

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Ecliptic

The ecliptic is the circular path on the celestial sphere that the Sun follows over the course of a year; it is the basis of the ecliptic coordinate system.

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Moon

The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.

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Pendulum

A pendulum is a weight suspended from a pivot so that it can swing freely.

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Prague astronomical clock

The Prague astronomical clock, or Prague orloj (Pražský orloj), is a medieval astronomical clock located in Prague, the capital of the Czech Republic.

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Sidereal time

Sidereal time is a timekeeping system that astronomers use to locate celestial objects.

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St Mark's Clock

St Mark's Clock is housed in the Clock Tower on the Piazza San Marco in Venice, Italy, adjoining the Procuratie Vecchie.

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Water clock

A water clock or clepsydra (Greek κλεψύδρα from κλέπτειν kleptein, 'to steal'; ὕδωρ hydor, 'water') is any timepiece in which time is measured by the regulated flow of liquid into (inflow type) or out from (outflow type) a vessel where the amount is then measured.

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