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	Astronomical clock Summary
		This clock is housed in the case of the 2nd clock.
		The Zytglogge in Bern is a famous astronomical clock from the 15.
		The ecliptic plane is projected onto the face of the clock, and, because of the earth's tilted angle of rotation relative to its orbital plane, it is displaced from the center and appears to be distorted.
	www.bookrags.com /Astronomical_clock (2422 words)

	orloj astronomical clock - prague - orologgio astronomico - praga
		The Orloj, also known as The Prague Astronomical Clock is one of the oldest European clocks of its kind (the first ever originated in Padua in 1344 and a second in Strasbourg in 1354) and continues to hold its exceptional position.
		The important exceptions are the sculptures flanking the astronomical dial and mask and figures on its architrave which were created at the beginning of the 15th century by members of the masonic lodge of stonemasons and sculptors led by Peter Parler.
		Magister Iohannes is renowned as the astronomer in collaboration with whom the clockmaker Nicolaus of Kadan constructed the famous Astronomical Clock of Prague in 1410 (this dating was done by Z. Horsky, cf.
	www.orloj.com (2570 words)

	Prague Orloj - Wikipedia, the free encyclopedia
		The Orloj is composed of three main components: the astronomical dial, representing the position of the Sun and Moon in the sky and displaying various astronomical details; "The Walk of the Apostles", a clockwork hourly show of figures of the Apostles and other moving sculptures; and a calendar dial with medallions representing the months.
		The oldest part of the Orloj, the mechanical clock and astronomical dial, dates back to 1410 when it was made by clockmaker Mikuláš of Kadaň and Jan Šindel, the latter a professor of mathematics and astronomy at Charles University.
		The astronomical dial is a form of mechanical astrolabe, a device used in medieval astronomy.
	en.wikipedia.org /wiki/Prague_Orloj (906 words)

	Astronomical Clocks in Berne and Prague (Site not responding. Last check: 2007-10-15)
		Its clock showed the official time after which all the other clocks were set, long before railway or radio existed as a means of checking the time; the distances of the roads were measured from the Clock Tower and it is to do it that the milestones on the cantonal highways refer.
		It was in 1530 that the artistic astronomical or calendar clock was constructed; and at the time the delightful mechanical figure-play was made, which is still today a much admired show-piece of the town.
		The basis of this clock is the Planisphere, which is painted directly on the wall of the clock tower.
	www.values.ch /sna-site/joint/bern-prague/clocks.htm (1000 words)

	The Astronomical Clock of Richard of Wallingford (Site not responding. Last check: 2007-10-15)
		Fortunately a manuscript containing Richard's notes on the mechanism for the clock is preserved in the Bodleian Library, [17] and it is this that North translates and that Watson used as the basis for his 1979 model, [18] as presumably did Harvard Horological Ltd for their full-scale reconstruction.
		In St Albans itself, from the middle of the 13th century, the clock would be set to sound on the presentation of a new abbot to God and the Holy Martyr Alban at the high altar.
		The first clock known to have shown solar and lunar data is not in fact the St Albans clock; it is the clock built at Norwich Cathedral Priory in the years 1322-1325 to replace the one installed over 30 years before.
	explorers.whyte.com /row.htm (4752 words)

	The Astronomical Clock
		This type of clock not only shows the time but also astronomical data.This data shows the position and voyage of the Sun, the Moon and the sky in general, according to the general opinions about the arrangement of the universe at that time.
		This astronomical clock was built in the style of one of the oldest astronomical clocks in Strassburg,France.
		It was undertaken by a watch-maker Frantisek Jahn nad a astronomer Antonin Gerhard.
	phoenix.inf.upol.cz /webtour/astronomical_clock.html.en (660 words)

	Articles - Clock (Site not responding. Last check: 2007-10-15)
		A clock face is the part of an analog clock that tells time through the use of a fixed numbered dial or dials and moving hand or hands.
		The ultimate analog clock is the sundial, which tracks the sun continuously, registering the time by the shadow of its gnomon.
		The earliest reasonably accurate clocks are the 13th century tower clocks probably developed for (and perhaps by) monks in Northern Italy.
	www.sinoz.com /articles/Clock (1200 words)

	Astronomical clock / Orloj (Site not responding. Last check: 2007-10-15)
		The first clock of the Old Town hall dates from the beginning of the 15th century and must have been a fantastic technological achievement for the age.
		The mechanism of the clock made by Jan Taborsky between 1552-1572 is still functional.
		Aside from showing the phases of the moon, the sun, planets and stars moving around the earth, the clock's most famous element is on the hour, a procession of the Twelve Apostles appears in the window in the upper part.
	home.tiscali.nl /jhadam/HTML/aclock.html (189 words)

	Hampton Court Clock
		The present clock tower and gateway was rebuilt by John Molton the King's Master Mason in 1528, and was named after Anne Boleyn as it was then she became the King's mistress.
		In 1538 John Fitzwater was transfered to be Keeper of the Clock at the Palace of Newhall Boreham in Essex.
		Our work on the clock was aided by the fact that we were able to investigate the clock tower when that part of the palace was awaiting restoration and therefore could see far more of the structure and the changes that had been made.
	pages.zoom.co.uk /cosmicelk/hamptoncourtclock.htm (2199 words)

	Jens Olsen's Astronomical Clock - Restoration (Site not responding. Last check: 2007-10-15)
		The astronomical Clock is now in optimal condition - according to the intentions of Jens Olsen.
		Henry Nørgaard examined the clock in the Spring of 1992 and confirmed the ascerted mis-readings.
		The planet movement had stuck and, furthermore, several of the clock dials had become hard to read because of a thick coat of lacquer and of the flening of the engravings of the scales.
	www.ateliera.dk /olsen.htm (420 words)

	Hampton Court Clock
		The present clock tower and gateway was rebuilt by John Molton the King's Master Mason in 1528, and was named after Anne Boleyn as it was then she became the King's mistress.
		In 1538 John Fitzwater was transfered to be Keeper of the Clock at the Palace of Newhall Boreham in Essex.
		Our work on the clock was aided by the fact that we were able to investigate the clock tower when that part of the palace was awaiting restoration and therefore could see far more of the structure and the changes that had been made.
	homepage.ntlworld.com /heather.hobden1/hamptoncourtclock.htm (2199 words)

	Astronomical Clock
		For many decades it was believed that the clock was constructed in 1490 by Hanus and his assistant Jakub Eech rather than by Mikulas of Kadao in a partnership with Jan Ondoejuv.
		In the fifteenth century a sculpture beside the clock and a mask and figures were added by sculptor Peter Parler and stonemasons from the Masonic lodge.
		In 1344, the first astronomical clock was built in Padua and a second clock was built in 1354, in Strassburg.
	user.intop.net /~jhollis/clock.htm (643 words)

	BBC - h2g2 - The Prague Astronomical Clock - A1043218
		Mounted on the tower of the Old Town Hall, Prague's Astronomical Clock is one of the oldest and most elaborate clocks ever built.
		It has two main dials (clock faces), one directly over the other, and numerous wooden figures which are animated when the clock chimes the hour.
		This type of clock, with animated figures and bells, is sometimes called a glockenspiel which literally means 'bell play', although the name is also used for a type of musical instrument.
	www.bbc.co.uk /dna/h2g2/alabaster/A1043218 (1106 words)

	Astronomical Clock by J. Crosthwaite (Site not responding. Last check: 2007-10-15)
		The clock was constructed for Dr Ussher of Dunsink Observatory.
		The clock has rubied pallets, an eight-day movement, and rated at mean solar time.
		This clock was attached to a stone pillar in the passage to the transit room.
	star.arm.ac.uk /history/instruments/Crosthwaite-clock.html (51 words)

	Astronomical clock - Patent 4684260 (Site not responding. Last check: 2007-10-15)
		An astronomical clock shows on a moon disc diametrically opposed images of the sun and the moon or, respectively, two moons which during twenty four hours appear alternately in a semicircular opening and travel through it.
		The clock described in claim 1, wherein said window in the face of the clock is in the form of a semicircular arch.
		The clock described in claim 7, wherein the rotational axis of said moon disc, the rotational axis of said moon phase disc, and the shaft for rotation of said control gear lie on a diameter line through the center of said moon disc.
	www.freepatentsonline.com /4684260.html (1984 words)

	The Orloj or Astronomical Clock - Architecture - Prague Hip Guide
		Sadly, the whole tower and clock were severely damaged during the Nazi occupation and ensuing uprising in Prague of 1945.
		The Sphere or clock dial is the middle of the Orloj and shows astronomical phenomena such as sunrise and sunset, ancient Czech and modern times, the movements of the Sun and Moon and other celestial bodies.
		The most famous legend about the clock is about the master clockmaker Hanus, who had his eyeballs burned out with a hot poker by the city councillors, in an effort to keep him from creating another clock of equal or greater magnificence elsewhere.
	www.hiptravelguide.com /prague/article-16.html (630 words)

	Clock Museums: Italy; Florence
		At the center of the important horological holdings of the Science Museum in Florence is the new (made in 1995) replica of the astronomical clock, which was calculated, designed and first made in 1510 by Lorenzo della Volpaia (1442 -1512).
		This astronomical clock, about eight feet high, is (together with the world famous Dondi clock of which there are replicas in a) the Smithsonian, b) at the Rockford Time Museum, and at c) Musee l'Homme et le Temps in La Chauux de Fonds, Switzerland), one of the most outstanding mechanical representation of the Ptolomean, i.e.
		As the clock is displayed without a case the mechanics are clearly visible and can be appreciated.
	www.ubr.com /clocks/clock-watch-museums/clock-museums-italy-florence.aspx (164 words)

	Su Song's Clock: 1088 (Site not responding. Last check: 2007-10-15)
		The clock was a precise apparatus used for astronomical observations and time keeping during the reign of Zhezong (Bulliet 333).
		Recent interests in the clock led to the building of a replica for the National Museum of Natural Science in China.
		They completely dismantled the clock and carried it off to their capital which is modern day Beijing.
	campus.northpark.edu /history/WebChron/China/SongClock.CP.html (740 words)

	Jens Olsen's Astronomical Clock - Facts
		Denmark's famous astronomical clock is the outcome of one man's brilliant ideas and his persistence.
		Without the carefully prepared design, this clock would not have turned out as beautiful as it became: A free-standing monumental astronomical clock in a delicately built mahogany cabinet, whose lightness contributes to its uniqueness.
		When he was 25, Jens Olsen went to Strasbourg, the home of one of that period's technical wonders, the astronomic clock with its perpetual calendar which is to be found in the cathedral.
	www.ateliera.dk /olsenfacts.htm (967 words)

	Astronomical Clock in Prague, Czech Republic / Orloj, Praha, Ceska Republika (Site not responding. Last check: 2007-10-15)
		But as in the case of Big Ben, the Astronomical Clock is a amazing piece of machinery that has become part of the collective soul of the community.
		The mentality of the age is reflected in the fact that the sun on the clock's face rotates around the Earth, and not the other way around.
		Since the clock is outside, unless there's an eclipse you already have a pretty good idea if it's day or night, but the clock still uses colors to symbolize the passage of day and night.
	www.praguearchitecture.com /BuildingDetail.php?BuildingID=PAI4 (395 words)

	Astronomical Clock by J. Crosthwaite (Site not responding. Last check: 2007-10-15)
		The clock was constructed for Dr Ussher of Dunsink Observatory.
		The clock has rubied pallets, an eight-day movement, and rated at mean solar time.
		This clock was attached to a stone pillar in the passage to the transit room.
	www.arm.ac.uk /history/instruments/Crosthwaite-clock.html (51 words)

	Prague Astronomical Clock
		The Astronomical Clock on the Old Town Hall is one of the major sights of the city and many visitors mention it as one of the most outstanding things to see in Prague.
		The astronomical dial (astrolabe on the clock face) with its mechanism is working to this day.
		Nevertheless, a number of self-sacrificing persons managed to repair the authentic old clockwork, and the Astronomical Clock was renewed in every respect in its original form.
	utf.mff.cuni.cz /Relativity/orloj.htm (615 words)

	Monumental Clock Gallery (Site not responding. Last check: 2007-10-15)
		Like their forerunner, the great astronomical clock of the Strasbourg Cathedral (originally completed in 1354; rebuilt in 1574), these monumental clocks went way beyond simple clockwork to include astronomical indicators, animated panels, automata, and mechanical music.
		Pronouncing Engle's clock "The Eighth Wonder of the World," the Reids exhibited the clock throughout the Eastern United States, charging 25- and 15-cent admissions for adults and children, respectively.
		The clock was toured around the Eastern US almost continuously over the next 70 years until it disappeared from public view after a 1951 showing at the Ohio State Fair.
	www.nawcc.org /museum/nwcm/galleries/monumental/monumental.htm (327 words)

	Sidereal Clock
		Astronomers keep time in relation to the stars, with what is called "sidereal time".
		The clock is hand-tuned to run one or two parts per million slow of perfect sidereal time at room temperature.
		If you're familiar with celestial coordinates, a sidereal clock allows you to keep in touch with what's going on in the sky even during the daytime when the stars cannot be seen.
	www.bmumford.com /clocks/sidereal/index.html (508 words)

	Astronomical Clocks of the Middle Ages
		There were clocks before 1300, but they were essentially water-clocks, regulated by the escape of water from a large tank through a narrow pipe - liable to freeze up in winter.
		Clocks had no long-term accuracy in this era, so they needed to be checked at regular intervals by means of a sun-dial.
		In some examples (most famously the clock on the town-hall in Prague) the sun and moon are represented by emblems attached to crank-arms pivoted at the centre of the Zodiac ring, so the emblems are constrained to move around the outer edge of the zodiac ring.
	www.almagest.co.uk /middle/astclk.htm (1178 words)

	CM_index.html (Site not responding. Last check: 2007-10-15)
		Rasmus Sørnes clocks will probably be the last ones ever,designed and made by hand by one single person after his own design and calculations, as a true craftsmanship and as an item of art.
		His clocks are made by him alone, in his shop, with his home-made tools, according to his own ideas and also supported by his own observations of the firmament.
		The Rasmus Sørnes Astronomical Clock no.3 however, the precursor to the Chicago Clock, his tools, patents, drawings, telescope and other items, are shown at the Borgarsyssel Museum in Sarpsborg Norway.
	impact.ii.uib.no /frodes/Clockmaker/index.html (184 words)

	eTrav Pathways - Astronomical Clock (Site not responding. Last check: 2007-10-15)
		The astronomical clock in the Old Town Hall has come to be the very symbol of Old Prague.
		The clock was the envy of Europe, and all of the major cities clamored to have Master Hanus build a similar clock for them.
		Above the clock from the tower, there is also a lovely view of Prague that you won't want to miss.
	www.etrav.com /pathways/html/pragueclock.asp (499 words)

	The astronomical clock of Besancon
		Later, the wealthy cities contestet this monopoly of time and cosmos successfully, and the astronomical clocks were moved from the inside of the cathedrals to the outside of the city's towers or townhalls.
		When the old clock of the town's cathedral Saint-Jean stopped working in the 19th century, it was of course a matter of tradition and honour to succeed it with a very special timepiece, nothing less than the most complicated clock in the world.
		Vérité rebuilt the clock almost from scratch, in his own workshop in Beauvais, which of course was seen as a serious disgrace in Besançon, which considered itself the nation's clockmaking capital.
	www.tp178.com /mh/besancon/besancon.html (946 words)

	My Study of Richard of Wallingford's Astronomical Clock
		The clock appears to have disappeared during Henry VIII's reformation and dissolution of the abbey in 1546.
		I was also interested in the clock as it appeared to have successfully met the challenge of modeling the planets and that it did all of this in a geocentric way.
		Once I took on the challenge of trying to digest the full complexity of the clock it soon became apparent that there were three main areas that remained enigmatic, namely the 24 hour strike mechanism, the lunar eclipse mechanism and most especially the planetary gearing.
	surfin_dude.tripod.com /creative/clocks/wallingford/stalban.html (2167 words)

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