本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.760 w+ \2 z- T- h0 r! G
) @! H M7 l" D0 N9 f6 p公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
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5 p d$ Q! F2 R6 [) q5.39.217.76TVBNOW 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。" N; s4 k; d% l( Q7 j, c# ~
Even after you see it, it is still hard to believe!
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* r- d& Q6 n7 L" Otvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。" k! q$ e- o% L4 S) ?
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
/ ~* n5 v8 { f8 A# m3 `7 J5.39.217.76It is located in the city of Magdeburg, near Berlin.
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4 w' Y ?& ]4 d; w' l) tTVBNOW 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。The photo was taken on the day of inauguration.0 N( u9 A7 D6 S' r) F& i! {* X
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists./ M% u- L! s U7 T, y/ b
8 m5 N9 Q5 F" L! N! n& s1 Y5.39.217.76Question:
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/ y6 H6 m$ T" I, H% J; p5 \: M+ HTVBNOW 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,5.39.217.766 _* o' Y( }/ t
Or just the weight of the water? 5.39.217.76% t; L4 t. P0 G
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It only needs to be designed to withstand the weight of the water!
+ X( { w% @ _- VWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。; ]! G+ S% L6 q# m% S: w* y% s N8 F a
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 ]$ E) r) m& q" o5 f/ F' n
- C3 o. F' t: R! F/ [The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。$ X3 @& ]7 _- W! n& q
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。4 ^& J- h5 S$ r" G$ s
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. 5.39.217.76* j$ x' U. }$ W) n% d4 k1 Z
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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. , x' ~& m" C0 m7 t* M4 @
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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。5 a( F3 g% A& U! s2 r
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