Water-clock
81Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… …
82Watch — For other uses, see Watch (disambiguation). Early wrist watch by Waltham, worn by soldiers in World War I (Deutsches Uhrenmuseum, Inv. 47 3352) A watch is a small timepiece, typically worn either on the wrist or attached on a chain and carried in …
83Borugak Jagyeongnu — Infobox Korean name |caption=A model of the Borugak Jagyeongnu. hangul=보루각자격루 hanja=linktext|報|漏|閣|自|擊|漏 rr=borugak jagyeongnu mr=porugak chagyŏngnuThe Borugak Jagyeongnu ( Water Clock of Borugak Pavilion ), classified as a scientific instrument …
84Jang Yeong-sil — This is a Korean name; the family name is Jang. Jang Yeong sil Korean name Hangul …
85Time in physics — In physics, the treatment of time is a central issue. It has been treated as a question of geometry. One can measure time and treat it as a geometrical dimension, such as length, and perform mathematical operations on it. It is a scalar quantity… …
86Daylight saving time — This article is about daylight saving time in general. For DST in a specific location, see Daylight saving time by country. Summer time and DST redirect here. For other uses, see Summer time (disambiguation) and DST (disambiguation) …
87Taqi al-Din — Muhammad ibn Ma ruf al Shami al Asadi (Arabic: تقي الدين محمد بن معروف الشامي السعدي, Turkish: Takiyuddin) (1526 ndash;1585) was a major Ottoman Turkish [cite journal last = Douglas | first = A. V. year =1963 title = Tenth International Congress… …
88Dar al-Magana — in the beginning of the last Century. Metal balls were released from twelve little doors into brass bowls on the lower beams to signal the hours. The rafters on the top level originally supported a small roof, now gone. Since 2004 the clock is… …
89Zhang Heng — For other uses, see Zhang Heng (disambiguation). This is a Chinese name; the family name is Zhang. Zhang Heng (張衡) Born …
90Time — This article is about the measurement. For the magazine, see Time (magazine). For other uses, see Time (disambiguation). The flow of sand in an hourglass can be used to keep track of elapsed time. It also concretely represents the present as… …
