本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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: {6 w0 h6 U' o" F, ltvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
3 h% }" m: y b. M0 B/ jTVBNOW 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。AMAZING!
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6 d% G, o+ q( ^& n3 j! M# ETVBNOW 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。Even after you see it, it is still hard to believe!
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0 y5 A9 \/ H& [; t. y: o7 ]! Jtvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
) `+ D4 T. L% m+ BThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5 H P9 D- E6 ^' l
It is located in the city of Magdeburg, near Berlin.
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0 e- V2 N' z" ^. OThe photo was taken on the day of inauguration.
; S( ~; u$ i/ m2 l, hTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.* r, P. [) D5 |5 {% c! Z
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Question: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。. Q1 ~+ O2 @3 ]3 s
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
- d4 P1 q) N0 |2 gOr just the weight of the water?
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6 j; }# |+ N# a3 q& g. k, }/ K5.39.217.77:8898Answer:tvb now,tvbnow,bttvb9 i, I3 C: P0 K$ v& i
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It only needs to be designed to withstand the weight of the water!
1 x2 _- K* H* CWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
2 f% K/ r. w I, 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。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。) c8 l: {6 T: M; n) A. q5 _, |) u# U
+ G0 S' p3 Z1 g; T! `5.39.217.77:8898The Incredible Magdeburg Water Bridge in Germany
4 I" k, X1 p% @4 x9 G b公仔箱論壇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- A }% U, K) s! v2 j
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. tvb now,tvbnow,bttvb7 D* |" j- T4 d
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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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