本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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3 y0 S' s- }$ R( oIf you are not a Physics person, read on and learn a fact of physics.
8 i5 T( G* e2 T) y6 P/ ^' otvb now,tvbnow,bttvbAMAZING!
4 _& D* Z1 u# k1 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。
1 I! k/ Z; g* ]/ @5.39.217.77:8898Even after you see it, it is still hard to believe!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 W2 K6 [/ I5 J1 l2 ?
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.77:88987 _* ?* S8 u4 |- H( X
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( D) L: I/ y6 Ftvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
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! n7 {5 Z% n" v. Q- i3 aThe 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。0 z! E& E k8 L4 `
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,
3 H2 O4 z$ }$ k. A& J/ U( t4 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。Or just the weight of the water?
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5 u8 ?3 [" z+ J6 v* p0 oTVBNOW 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。Answer:
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It only needs to be designed to withstand the weight of the water! 公仔箱論壇* r3 I0 r% K1 I4 D* {6 g
Why? 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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% B$ V5 |1 \- b8 d& h" ~ OThe Incredible Magdeburg Water Bridge in Germany
* O+ r. C5 G2 s/ ZThe 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.
0 w8 ]+ U- D3 Q# g: \( q5.39.217.77:8898The 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. 9 d, w7 S7 a o. U" e! w
/ h2 {# J8 D& l8 c R2 pConstruction 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. 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 J& o9 x" B* T( `
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- n, B, q" n; I P6 m2 @, k6 f/ n公仔箱論壇5.39.217.77:8898$ g; J) k. Z+ ?# M
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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。! Z) x. D- w/ e& i( t& b0 _- u3 X3 B
發表於 2011-10-15 09:35 PM
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