本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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, o/ a2 l M+ J4 etvb now,tvbnow,bttvbIf 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。( f' |! x5 V4 }) q% D- ~
AMAZING! 5.39.217.76( k$ J# k% w/ [6 K
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Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb H; \0 q2 k1 z& E2 t8 ^, F0 ^+ c b8 C
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. # s2 ]9 ?! m6 @
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb7 X. T4 c; `' ~) H# @
, _3 W% f2 o8 H0 x/ m& _公仔箱論壇The photo was taken on the day of inauguration.
8 a n- H6 r- K& J0 ^公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.7 }: h& @7 M- t* S: Q; M' {% d
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Question:tvb now,tvbnow,bttvb% `+ p" b3 }9 }
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb$ T4 l2 f2 _, ?, K0 Y
Or just the weight of the water?
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Answer:
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It only needs to be designed to withstand the weight of the water!
; F6 \* N8 A N rWhy? 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
- R, {8 _: s# g$ W公仔箱論壇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.* N' ]0 `7 y5 Z6 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.
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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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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。* |3 O! K& F! _
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- q2 {# t: m; M0 e" ^+ PTVBNOW 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。公仔箱論壇7 a* e4 c$ \* c
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