本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。7 m( Z% r3 ^+ w
# H a* ~+ i& y0 y5.39.217.76If you are not a Physics person, read on and learn a fact of physics.
7 D: t( G/ L3 H; `tvb now,tvbnow,bttvbAMAZING! tvb now,tvbnow,bttvb. A5 a# o, u3 Z: E# {
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Even after you see it, it is still hard to believe!5.39.217.764 f7 p+ U/ ^1 j- x4 S
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
& ]% u( f9 E; G5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
0 X) H- G* @: V% @$ H c9 V2 R: }' BTVBNOW 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。It 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。3 |8 _7 w5 {7 T& I6 [: [
- l& L! |/ s! p$ j% W5 K7 ?' _+ FTVBNOW 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.tvb now,tvbnow,bttvb5 r# T a. M- l- x
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
& d3 b. n: s/ ]" _, |0 \5 ]! bTVBNOW 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。* P: F; G# j- }. `4 ~0 J- d6 O
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
& S' h, a1 Q' v* ~' I& t: aOr just the weight of the water? 5.39.217.76' i4 ^. z+ q/ C. a4 E% Z: n( ]3 f
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& [
Answer:- R$ U, [9 M2 J, W+ K7 a2 x9 a
7 H( p( Q' y& P, }tvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! 9 I0 x. l) @2 @# S( ^
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3 C+ h7 K" c8 }6 y2 d' E$ \2 G4 a
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. L5 F( p5 D( t& x/ ^6 _The Incredible Magdeburg Water Bridge in Germany
/ u+ |- w Q! |/ O/ ?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.公仔箱論壇- R" ~7 y0 Z) N9 i. |7 C# ~4 ^
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.
6 z- |+ m* i1 m" s F2 qtvb 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。" {; m( {9 ]' K# o
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. tvb now,tvbnow,bttvb8 g5 L3 X1 q* L! t' P
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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。/ c9 F) F' ^( F' B
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