本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 / O- a1 Y) z# ]2 p q2 o
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If you are not a Physics person, read on and learn a fact of physics. 8 M/ D) E5 W$ F8 d% R% q' z9 i
AMAZING!
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Even after you see it, it is still hard to believe!3 _" d: H4 Q% Y5 k( b. s$ v4 ^
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" S+ R4 a$ D C! Q& e- b& l2 C# TMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 0 C* J7 a7 h) y( D4 E6 D
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
3 Y4 Y6 |2 g Y0 D8 D7 ~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。It is located in the city of Magdeburg, near Berlin.
$ E1 P1 s: q) a3 x1 T# }5 y公仔箱論壇
; n5 @$ W/ T4 X1 F! b0 T1 t& ^, ttvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.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。& D/ y9 @ o0 t5 Q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇4 E0 ~9 h$ ~8 f7 r5 m6 @! e
- J f+ T- ]" T. C: S r7 j. t6 N% Btvb now,tvbnow,bttvbQuestion:公仔箱論壇1 I) Y$ l! P2 O2 P
: _+ a* @: A- r% @' G公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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。4 h$ \& w9 d0 G! E, }( h
Or just the weight of the water? 公仔箱論壇4 z! [; I5 q3 r1 a$ k# m7 a
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Answer:
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It only needs to be designed to withstand the weight of the water!
. M; s9 @1 N8 T0 d# y7 ^www1.tvboxnow.comWhy? 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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The Incredible Magdeburg Water Bridge in Germany
1 t1 g, Q [8 F2 h& K+ kThe 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.
7 A" R0 x( g1 N8 E1 B; ^4 vwww1.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. tvb now,tvbnow,bttvb1 d$ F; d7 K5 `. T
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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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