本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 9 ?# o$ B1 o5 X8 E9 ~5 R
4 v! H0 R( O. ]% ?- T: @: t' D公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. 7 `9 U E7 o% w* F* P
AMAZING!
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3 R! V9 x$ N! g; CEven after you see it, it is still hard to believe!
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% }; W$ |4 o1 l6 K1 u: W' l( L6 C公仔箱論壇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。: W6 P# u8 r9 P5 d9 @
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.76# G" z! W2 H% `; J5 d3 `4 H z! p1 ~
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
: W3 w) d* {5 U: f& dtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.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。& Q8 e0 G0 } U/ X" o
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。0 f V% H: [. R3 T( C3 C6 A2 i
The photo was taken on the day of inauguration.5.39.217.76; ~$ [. @6 A% `
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb4 k1 |, Z; ?' n3 D/ \+ m. t
+ ~) ]- L+ e+ \& LTVBNOW 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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, c" p, {; F9 v/ n8 ?+ ^! BDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
0 v+ P- q7 [" ROr just the weight of the water?
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Answer:
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It only needs to be designed to withstand the weight of the water!
* b3 S; l! T$ o公仔箱論壇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公仔箱論壇; S! }& y: Z8 m3 v1 `
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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇$ G8 t& J: P! }4 y. m
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. H) @. v" X7 }
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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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- [: P" d( W
5.39.217.76$ K. z/ f8 A# p3 Q1 @
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 K. a, y6 n* h' |* f, B+ R6 B+ g
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。) t2 _9 m8 X9 E+ Y3 B3 q ~7 w& h- F
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