本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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+ E: J9 M- {( X% h( o! g8 ^+ Qtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
# l: t2 T! N) \! sAMAZING! 5.39.217.76( }/ Y* b. k; Q, q3 |1 S
$ _" X T' E. [' d. O公仔箱論壇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 q* U4 M% o( k9 t4 K' s! B5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
% y- y1 M) L7 LIt is located in the city of Magdeburg, near Berlin.2 H9 g4 i; s- p' N% B/ O0 S/ @
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The photo was taken on the day of inauguration.
1 u. y+ m8 E; }0 l, R5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。; X9 Y8 H5 g. n/ K: J4 k, Y" W
7 T7 i( `$ G( RTVBNOW 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。Question:
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, `6 S* X) ~8 F4 f; _5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
' t3 o7 ^" q1 |+ s2 NOr just 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。: k" v* j. ~ C7 `8 B
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Answer:5.39.217.765 J4 z" Z3 g7 V: Y7 D
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It only needs to be designed to withstand the weight of the water! 5.39.217.76* ^! q# Z5 x Q4 r- P
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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' C4 D3 a- n4 c/ N+ 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 Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb' n0 ^3 k' ^3 ]7 Z' j
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.
4 F) C. y. V4 O/ G5 X1 Z$ K% 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。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.
/ U( W' E( [" ?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。# b% ~4 D: E* K3 q- w" ~( d
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。1 g: K. \7 c0 q! ^/ o% ]! }
5 Y6 m5 A8 }1 u9 n& O! t1 `tvb 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。9 {& d+ M. @8 D$ c. R
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