本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics.
. Y' ], i- W2 uTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。AMAZING!
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8 a. T5 w( r P: btvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
9 }$ Z4 U1 ^) h2 C3 M- F" {公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 9 z7 u9 j3 a3 y8 B& \, D
It is located in the city of Magdeburg, near Berlin.
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& T% u' V9 j m! z公仔箱論壇The photo was taken on the day of inauguration.
6 ~) e8 A& E3 k( L2 KTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇1 h! W. t8 X8 e: h) n0 e% l
; f3 k5 x; f, M: ^5 T' l; A0 E5.39.217.76Question:) G) {: z! m( |1 } _+ ]1 K% w
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,. u9 D8 f" [& I/ O
Or just the weight of the water?
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Answer:
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It only needs to be designed to withstand the weight of the water!
% u) U* u3 M* s9 p$ q \# r. KWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded公仔箱論壇# r7 a/ @, r& Z& U
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- h3 n. h+ ?! C" `6 y- vtvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany5.39.217.763 F# X2 [. f- ^2 {+ m
The Magdeburg Water Bridge is a navigable aqueduct in Germany that connects the Elbe-Havel Canal to the Mittelland Canal and allows ships to cross over the Elbe River. At 918 meters, it is the longest navigable aqueduct in the world.4 r! X# V) G! P' a
The Elbe-Havel and Mittelland canals had previously met near Magdeburg but on opposite sides of the Elbe Ships moving between the two had to make a 12-kilometer detour, descending from the Mittelland Canal through the Rothensee boat lift into the Elbe, then sailing downstream on the river, before entering the Elbe-Havel Canal through Niegripp lock. Low water levels in the Elbe often prevented fully laden canal barges from making this crossing, requiring time-consuming off-loading of cargo. 公仔箱論壇, Z' p2 U# Z1 |4 V. A5 ~, f% G* O* V
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Construction of the water link was started as early as in the 1930s but due to the World War 2 and subsequent division of Germany the work remained suspended till 1997. The aqueduct was finally completed and opened to the public in 2003.
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8 j# R9 _1 q# {- m4 ~TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。
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