本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇) j L7 g( M; i5 F
/ Z; {* N/ r# g4 r$ H公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb- t/ } s9 n3 n) _" s0 t r4 n
AMAZING! 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。. h7 u$ _7 p2 H$ f3 m
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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! / Q" D+ a$ H$ T3 P ?+ p8 d
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( T5 k C$ u. i- j: G- L+ _5.39.217.76It is located in the city of Magdeburg, near Berlin.
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0 l: B% C) k& f8 MTVBNOW 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.5.39.217.76- b! f3 K/ `# ]8 v# L
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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" q) W/ J( k1 [" B公仔箱論壇Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇" P8 j' D6 }# X) r3 L: j. H8 f
Or just the weight of the water?
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Answer: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。: w" z+ O3 d8 ^9 X
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It only needs to be designed to withstand the weight of the water!
5 X: q0 o* B- F9 s5 ^tvb 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
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. @- M- ~" o. @( ltvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany0 _3 L7 a5 o8 {: @, x0 ]
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.
1 _8 g+ s$ U) V2 w. P Itvb now,tvbnow,bttvbThe 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. : L* R% @2 S0 p/ W' n1 m' G
" ]! h6 V3 ` L2 \- q5 U9 Y" VConstruction 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. ) N# I5 r: W* |, o6 f
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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。9 K( k. b1 }% o. m. Q3 }
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