本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。6 v; v0 X( F8 o% D; W0 F6 e9 M
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If you are not a Physics person, read on and learn a fact of physics.
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2 g, E' Y6 Y; w3 t+ E; q公仔箱論壇Even after you see it, it is still hard to believe!
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0 a9 X2 `! g( d/ btvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
. l7 v" `% @( Q$ htvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb, O0 ]* `( O3 ~9 z
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
3 ^' T2 v( q* Y. T2 W' XTVBNOW 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb! Q9 D* }9 E; G; R
Or just the weight of the water? 公仔箱論壇, J! H& k# X$ l2 Z q
* l9 ^, ?( f4 l- qwww3.tvboxnow.comAnswer:
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6 ^0 f5 f9 R. ^+ h2 MIt only needs to be designed to withstand the weight of the water! 公仔箱論壇* c$ H- F9 z0 @
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
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, d% `6 Z" D5 ]The Incredible Magdeburg Water Bridge in Germany
6 E; y2 e; c) R$ ?( I' x2 U+ ^; Qwww3.tvboxnow.comThe 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.www3.tvboxnow.com, d. y# g6 H; U6 M+ x }/ z; d
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. 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。$ Q9 N4 K& }/ r6 `
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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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