本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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* ]+ p4 c6 G; c4 BIf you are not a Physics person, read on and learn a fact of physics.
" J; R3 p8 \% U5 K4 _4 q公仔箱論壇AMAZING!
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% q# {$ m" V2 q% S& n+ OEven after you see it, it is still hard to believe!
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. e/ U, ~ C8 K) a5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇: e$ m4 k7 c( h4 u! r
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 s3 g& ^' m N) F3 w- Y1 O7 hIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
4 X2 A- x, e+ p! ^% g! C5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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' \6 W) W/ t+ i6 FQuestion:
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6 o2 f6 }8 K3 w0 s# R0 @( w; G3 }& nTVBNOW 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.765 a9 S9 J' ?' `
Or just the weight of the water?
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1 `/ K$ V3 ^' u% H& n h- x公仔箱論壇Answer:5.39.217.76) U+ ?' @2 s. Y6 M0 L" v8 O+ W
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。! s7 P, i' w& M8 u. ~
It only needs to be designed to withstand the weight of the water!
% N4 b3 b# z& Rtvb now,tvbnow,bttvbWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
4 |: x5 y8 Z' B) x# m, r; q公仔箱論壇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。0 P `4 V' Y5 B8 ~5 _. |1 f: Y
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The Incredible Magdeburg Water Bridge in Germany
/ J( j7 g0 D' {% a: _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.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。9 F( S; ~) V; m) D
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. 5.39.217.76$ D0 _3 p+ f' z' c5 F6 Z
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。0 ]) u! \/ \7 v. C& O& _
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 h; Y. K6 C" [6 p3 [& J
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。5 I2 U& q, c" s6 ^
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/ b, h: j: v$ \% ]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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. e- W V1 S: R1 atvb now,tvbnow,bttvbTVBNOW 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。1 R2 A2 d/ D4 V3 j! D" n$ T( n
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