horology

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horology

(hōrŏl`əjē), science of measuring timetime,
sequential arrangement of all events, or the interval between two events in such a sequence. The concept of time may be discussed on several different levels: physical, psychological, philosophical and scientific, and biological.
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 and technology of constructing instruments for its measurement or recording. Early measurements of the passage of time were based on observations of seasonal cycles and of the apparent motion of celestial bodies. Shorter intervals were measured by observing the shadow cast by an upright object; the shadow clock and the sundialsundial,
instrument that indicates the time of day by the shadow, cast on a surface marked to show hours or fractions of hours, of an object on which the sun's rays fall.
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 were probably the first devices constructed. Later came the hourglasshourglass,
glass instrument for measuring time, usually consisting of two bulbs united by a narrow neck. One bulb is filled with fine sand that runs through the neck into the other bulb in an hour's time. The date of its invention is unknown, but it was in use in ancient times.
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 and the clepsydraclepsydra
or water clock,
ancient device for measuring time by means of the flow of water from a container. A simple form of clepsydra was an earthenware vessel with a small opening through which the water dripped; as the water level dropped, it exposed marks on the
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 and finally the clockclock,
instrument for measuring and indicating time. Predecessors of the clock were the sundial, the hourglass, and the clepsydra. See also watch. The Evolution of Mechanical Clocks
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 and the watchwatch,
small, portable timepiece usually designed to be worn on the person. Other kinds of timepieces are generally referred to as clocks. At one time it was generally believed that the first watches were made in Nuremburg, Germany, c.1500.
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. The most accurate type of timekeeping device in existence today is the atomic clockatomic clock,
electric or electronic timekeeping device that is controlled by atomic or molecular oscillations. A timekeeping device must contain or be connected to some apparatus that oscillates at a uniform rate to control the rate of movement of its hands or the rate of
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. Highly accurate time, which is necessary for such purposes as navigation and the tracking of artificial satellites, is provided throughout the world by time signals that are transmitted by certain radio stations.

horology

[hə′räl·ə·jē]
(science and technology)
The science of measuring time and the technology of constructing instruments for this measurement.
References in periodicals archive ?
An annual event since 2005, "Watch of the Year" aims to establish industry standards and raise awareness of watch culture and horological craftsmanship across the Middle East.
We were very lucky and had a wonderful set of tutors - Paul Thurlby, a very talented watchmaker, Malcolm Wadlow, who subsequently went to Manchester and Justin Jay Koullapis, editor of the Horological Journal.
Knowing that Writer Christianson is a capable craftsman who has served as president of the American Watchmakers and Clockmakers Institute, that he not only mentors regarding clock and watch restoration, and is a Fellow of the British Horological Institute, but that he also writes for Professional Jeweler and Watchmaking publications lends much to his credibility.
Panerai watches are a seamless melding of Italian design flair and history with Swiss horological expertise.
Thinking of persons as clocks may not be customary, even if Rosalind's horological blazon provides a template for doing so.
Each year, 2000 of the most prestigious watch companies and craftsmen specialising in clocks and watches, jewellery, and precious stones, congregate in Basel, Switzerland, to exhibit and release their latest horological developments and design advancements.
Delhi, March 26 -- A symphony of femininity and voluptuousness, a new jasmine has just bloomed in RAYMOND WEIL's horological garden.
The 400-odd watch industry players know that in order to be in the game, let alone thrive in it, they have to judiciously earmark their watches not as mere products but as horological icons.
He is most famous for creating the co-axial escapement (the device that drives a timekeeping mechanism) which has been described as the most important horological development for 250 years.
If you have coins or collections of coins you are thinking of selling we are holding a specialist valuation day shortly at our Southport office with Hugh Gregory, Fellow of the Gemological Society and Horological Society.
This kind of work needs a well-educated person who knows different languages in order to read the latest horological books and catalogues," stated Walid.
Breguet shone with two historical auction results paying testament to the genius of Abraham Louis Breguet, the most influential horological innovator of all time.