本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇: E3 ~! X1 T7 ~9 q
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If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb6 c- A9 @" Y% Y; E# S6 [ }# l
AMAZING!
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- w7 f. |: p5 d' O* g7 fTVBNOW 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。Even 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! 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。" t$ s" K3 ?/ W; H, y+ t
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇' r, l* W" o3 j2 M
It is located in the city of Magdeburg, near Berlin.
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6 E8 O4 x+ Y1 H! v# m# A8 q) Gwww2.tvboxnow.comThe photo was taken on the day of inauguration.
R/ X6 K% R6 ?0 x I! tTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:1 y" @6 T' U6 B, I) `2 X/ T
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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2 B2 _9 F ?5 D; `0 aIt only needs to be designed to withstand the weight of the water! 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。+ r3 d7 g! u' w8 D& B
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公仔箱論壇1 X4 U3 u; s X
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8 C. f; u6 B) b2 B$ mtvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germanywww2.tvboxnow.com0 g8 w5 d* B6 `/ H4 I! Y% @
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.: r3 X& H K% k9 D0 h1 c( S
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.
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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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