Horologia term (from the Greek: ὡρα, at (time), and λέγειν, to tell) was used to designate the type of device that is now an hour, but the use of this word (still there or leave an impression in several languages, Roman) for all types of recorders time concealing the true nature of our mechanism. Example, recorded in 1176 a newspaper that Sens Cathedral installed a 'horologe' but the mechanism is not known. According to Jocelin of Brakelond, in 1198 when a fire at the abbey of St. Edmundsbury (now Bury St Edmunds), the monks 'rushing toward the timer alarm' to fetch water, indicating that their water online timer alarm also acts as a water reservoir large enough to extinguish the fire at the time.
New mechanism
Outside Europe, the mechanism bolosan known and used in China in the middle ages, when members horological and engineers Song Dynasty, Su Song (1020-1101) to apply them to the creation of Astronomical timer alarm tower in Kaifeng in 1088. However, the astronomical timer alarm and spherical rotating AIK still rely on the use of water flow (ie hydraulics), while European exchanges hours at the following centuries already stripped the old habits for power drive load efficiently and bolosan mechanism.
Hours if his mercury in Spanish papers Libros del Saber from 1277 M that contains translation and paraphrase from Arab papers, are also used as evidence for knowledge of mechanical timer alarm in the Muslim world. However, the device is actually a compartmentalized cylindrical water timer alarm built by "Iran" (Hero of Alexandria), according to the authors of the working paper are Jews, Rabbi Isaac.
From the year 1280 to 1320, more and more hours and horologe mentioned in church records. Perhaps this is an indication that the creation of a new type of timer alarm mechanism. Existing timer alarm mechanisms that use water power for power pacuannya adapted from the weight down. Power is controlled by the same shape swinging mechanism which is probably derived from existing bell sounding device at the time. This controlled release of power (bolosan) marks the birth of the true mechanical timer alarm.
Mechanical timer alarm has two main purposes, namely: signaling and notification (eg the timing of services and public events) for administrative purposes, and modeling of solar systems for the use of scholars in astronomy, science, astrology, and integration of knowledge with the philosophies of the religious . Astrolabe used by astronomers and astrology, it is not surprising hour drive belt used on rotating plate to produce a working model of the solar system.
Brief hour notification aimed only be installed on the tower, and not necessarily the face and needle. It certainly used to declare the statutory hours or intervals between prayer times. Statutory hours vary in length according to changes in sunrise and sunset. More sophisticated astronomical timer alarm to show your face or a needle that moves, and shows the time in various time systems, including the "Italian hours" (24 hours begins at sunset / dusk), the statutory online alarm timer, and also the specific time is done by the astronomy in those days. The two styles of timer alarm started to use fancy features like a puppet automaton.
Further development of
Tailor hours of taking a variety of ways to develop their art. Small timer alarmmaking technically challenging, as well as the improvement of accuracy and integrity. Hours can be used to highlight the grandeur of the impressive technical skills, or the mass exodus of goods cheaper to use in the home. Bolosan is a major factor affecting the precision timer alarm, so all kinds of mechanisms have been tried for this purpose.
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