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. 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。+ `7 m( U" s) k# ]
AMAZING!
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Even after you see it, it is still hard to believe!公仔箱論壇0 k5 m) S+ P+ r8 [9 O8 |; D
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! www.tvboxnow.com6 g3 s/ t1 N' t/ P% p
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
4 x5 x h# q8 ]; z& mtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.www.tvboxnow.com7 j4 R6 G4 [4 P5 w
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The photo was taken on the day of inauguration.
& o. G# q& v. r9 l4 G8 Mtvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
1 q% W4 x5 e$ [( s% H; J9 UTVBNOW 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。* s( _' _( C& ?8 u: U6 f
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇5 `% g f: `7 ?9 n
Or just the weight of the water?
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Answer:公仔箱論壇2 P6 q6 @3 B% _' q4 z- _
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It only needs to be designed to withstand the weight of the water!
- |* u8 L: p5 n" L& L% W5 FWhy? 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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. C$ m* v0 A, p2 V2 X公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
2 D$ \8 j2 V+ uThe 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.
' g" x0 _; n$ S5 m- j. Z# lwww.tvboxnow.comThe 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. % x, @! V& M( J
4 Q$ `2 t+ ~/ d& o3 p: @: z$ iwww.tvboxnow.comConstruction 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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- _0 L2 q/ |+ g2 f+ lTVBNOW 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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