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.
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# G' U1 Z6 _( y7 F- I5.39.217.77:8898Even after you see it, it is still hard to believe!
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7 }5 \$ E2 M$ _1 {4 a1 G2 U. W4 @: sTVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
% N g# Q5 R6 W& TThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.77:88984 ~6 o6 P6 ^/ P* w, {9 i" H
It is located in the city of Magdeburg, near Berlin.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。 h9 O5 o/ c: A7 p; R- T& z
3 H1 N$ y( A. X$ H5 Y9 I5.39.217.77:8898The photo was taken on the day of inauguration.
6 G& O6 S% Q) ]4 @2 VTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
: M( p: u1 K! i$ F3 P3 g; y, MTVBNOW 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。Or just the weight of the water?
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Answer:5.39.217.77:88987 V1 L2 `# `3 k7 a6 Z8 \; j R
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It only needs to be designed to withstand the weight of the water! 公仔箱論壇, N' A9 J- W' F
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; C8 O/ l5 Y3 t- H8 k. d2 P. F
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The Incredible Magdeburg Water Bridge in Germany- A2 m/ J9 n; s- d q' ?$ W
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.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。; j: S8 u2 s% H3 I+ ]% o
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. ! k% C5 _8 }7 n, r7 X% k
) g @. ?) \* }5 h0 o* DTVBNOW 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。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. , m, P; o6 z: [1 w
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