本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.762 _( K' J' H: ^' v/ n
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If you are not a Physics person, read on and learn a fact of physics.
1 ?6 ~6 V% q1 `# Z3 ]" u5 B7 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。AMAZING!
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Even after you see it, it is still hard to believe!5.39.217.76" K/ k8 B" U; G) {$ {, |
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
2 H) Z9 F, N/ M. C0 k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. 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。; M b, N% r, }; m% G2 Q
It is located in the city of Magdeburg, near Berlin.
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: K6 s3 f. v) e. ?. l. q, C5.39.217.76The photo was taken on the day of inauguration.公仔箱論壇! H' v, U) J% ^
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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( m1 W* L, }+ z; S3 u2 O5 {5.39.217.76Question:
: T! F+ Q- ]2 }' l9 vTVBNOW 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。
0 C. o) N/ ]. Z' g3 n& f公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
* A' |5 G) i% q; c: u$ cOr just 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。 Y1 ~7 N) v" E- M
; ?( ]* d2 [. J- B. Vtvb now,tvbnow,bttvbAnswer:
u, P2 d0 Y( K+ 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。5.39.217.76( X0 R8 Y+ d2 t" a) Z+ q' Y0 Y
It only needs to be designed to withstand the weight of the water!
% r* V) \0 m4 }9 X2 A9 ZWhy? 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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( q0 [1 L$ h- _+ \3 S: x公仔箱論壇The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。) y: f5 z& Z8 ]: j0 `
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.8 _1 q, P- ]- p C# W% Q4 h8 {! W2 G
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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! x8 \5 B- f; u; i8 `2 T6 T3 O5.39.217.76Construction 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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3 I/ a9 [" _, o) h5 r, `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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公仔箱論壇3 R0 _2 y% a! S [; r, W/ }
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