本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.77# t$ f1 H! j7 h) l# g1 A
0 w6 ?0 i3 T8 [, N% G0 R3 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。If you are not a Physics person, read on and learn a fact of physics.
7 R; ]. w6 E* N/ bAMAZING!
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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!
7 }! R5 r8 A" L公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. % R1 l( G) H3 g# i3 C; K* e) y3 H1 ?
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb1 ?5 B8 ?+ v( r; n; j' T
* w$ \: T6 u" E& I9 utvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.2 w9 |4 S+ R( u$ `
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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/ r5 K, V) p: \- A+ r' o公仔箱論壇Question:
( \; H8 u/ I V1 o, A4 r5 ^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。公仔箱論壇 D8 k0 H& k6 x
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb" x# p5 l; {& @. e
Or just the weight of the water?
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; O- y8 Y& q" F) ZAnswer:
8 j5 z( w5 m) T3 |/ n/ Etvb 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。$ E" V+ a: _1 j
It only needs to be designed to withstand the weight of the water! 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。" e( f) M% c- ~) B( e$ U' ^
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb$ ]+ P7 [' p; D! G
+ a/ k% p |$ _' W" u3 Q! |. K5.39.217.77TVBNOW 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。8 S* V6 b8 h2 n# @4 e
The Incredible Magdeburg Water Bridge in Germany
. T. P4 C- P/ A& k2 e3 UTVBNOW 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 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.tvb now,tvbnow,bttvb/ U/ ]0 O/ J4 ^
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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' v: l$ l/ N. L# s9 s8 x公仔箱論壇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. 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。8 g0 d) Z: p$ h6 T7 P: C7 k
6 z+ P [4 ~" ~1 ]$ z N! V公仔箱論壇5.39.217.77. x) P! g0 ^' A) N+ H- c& z
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# U( v) c% e) P. }0 Dtvb 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。2 ~7 l: S. t5 n6 P
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