本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb2 E7 ~0 e4 C7 O
- e) X$ t6 ]- ~7 K! o7 \公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇$ a" @- |1 A( O
AMAZING!
6 T# [/ F" ^) L$ {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。0 j4 Q% K1 V* b( X' Y
Even after you see it, it is still hard to believe!5.39.217.760 Z- I/ v( u& _' n8 x0 Y# [3 b/ M
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 0 I3 H& J, p4 {2 P; b. G
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
- m6 {; R6 T. r& C" V1 Y/ Y: j7 Ktvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.5.39.217.76, C; m9 K5 Z3 v' d! _0 O/ w7 {
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.8 y* @9 f; G1 L5 U
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,& c- n! U9 L8 `/ N2 v" P- g
Or just the weight of the water? , K. Y" [' P8 H% }
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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。, h$ ~& T/ h6 B1 L; X1 `
公仔箱論壇0 e0 A0 Y. _3 a4 j8 K6 ^: t
It only needs to be designed to withstand the weight of the water! 公仔箱論壇' U& [) i; N @3 G; ^ Y: o7 `
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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% l8 b8 M7 S2 ~: n# u7 @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。
$ R$ t x3 S" `- ~% j) YThe Incredible Magdeburg Water Bridge in Germany公仔箱論壇# e7 _4 j. Y, _9 \% r: w4 }
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.
3 | \/ b! \- h. k% t/ ~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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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.
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3 {* ^' X2 L! 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。公仔箱論壇8 _9 Q. @ I9 p. V5 U
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