本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 & J3 L3 i& q& h6 O/ k
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If you are not a Physics person, read on and learn a fact of physics. ) N3 k6 N, N$ _9 F# d2 S' B
AMAZING!
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; w8 U6 _7 b& Q1 P1 M% C$ c; P& ~公仔箱論壇Even after you see it, it is still hard to believe!+ n, j9 _, \: S, p* T
; h0 {2 b* d- N) X公仔箱論壇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。5 D$ I2 S; p+ M% W9 x; w
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇* D: e( ~3 q# @) Z" p3 X8 ?9 i) `
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. , i# c3 ?# R7 C5 }
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb n E% _8 Y" m/ g$ Z7 x
V/ h b/ @8 u5 {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。The photo was taken on the day of inauguration.www1.tvboxnow.com. l4 Q; V$ H. w; U; s1 k% ^7 a
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.www1.tvboxnow.com* P7 Y7 \" K! E2 ]
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Question:
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% o, l3 e8 y& g& T' Hwww1.tvboxnow.comDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,% n C1 f( w! ^; p3 w6 q4 u% T
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!
5 C' _/ a5 |0 F# L, hWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb: |" P h5 e9 f
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The Incredible Magdeburg Water Bridge in Germany
0 @% A" K$ g5 h, B8 k. Z: J5 Iwww1.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.
) I( ]0 y* k# ]% `3 s" qThe 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.
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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. 公仔箱論壇5 ^! P) g9 @3 c7 {
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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。$ C* h, A K: Q
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