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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3 ?% G4 p- K* l0 I公仔箱論壇Even after you see it, it is still hard to believe!
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5 V& M& F; }" ^$ JTVBNOW 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。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$ z6 Z" l8 C+ O" c
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。- J' s, z: W4 |7 N/ h
This 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- x' P+ h+ p( h* n! F* g( @0 i
It is located in the city of Magdeburg, near Berlin.
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' d( f4 Z" W5 R9 wThe photo was taken on the day of inauguration.7 O; u9 O. M% j1 D3 g5 z- G. }
To 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,
8 d" o3 `' ~) I: Y, M5.39.217.76Or just the weight of the water?
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Answer:
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1 C: R- C! f$ B! I S. c. e5.39.217.76It only needs to be designed to withstand the weight of the water!
/ W9 d& E8 _# x# L公仔箱論壇Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded9 N! {' J6 o& h; Q
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The Incredible Magdeburg Water Bridge in Germany
4 o. M. ^. v* X Y" Y3 t, aThe 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.公仔箱論壇: }& a3 Z4 `! t, V& I9 X5 E
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. # w9 f! P0 Y, n% t) }, z. m0 ^! b5 L3 @
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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. tvb now,tvbnow,bttvb8 D g+ S/ a6 K3 u2 S3 d. n# r' N
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3 Z( k9 H* K9 i2 Z1 B: {+ yTVBNOW 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 a6 F) r& ^8 t* }5 k- {; h
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