本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ( ?$ M( {" f" y! V) H0 U
9 J+ G% [& [$ f( m5.39.217.76If you are not a Physics person, read on and learn a fact of physics.
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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!
& l& z. ?; D$ L! q8 X* x J- V, i! gTVBNOW 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇7 R" k% O: W& ]8 n/ ~' ]3 X6 A
It is located in the city of Magdeburg, near Berlin.& A1 ?* Q9 O+ f3 f
; c9 j8 ]& W0 }: x6 xThe photo was taken on the day of inauguration.. u1 J4 B6 a, j" s1 }
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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7 V- g: \ N4 `1 _8 e' B& bQuestion:; u/ O- ]; }6 U0 n) V9 X! f: t
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,. R5 }5 i! [. i( E8 f* A$ |- U4 a
Or just the weight of the water?
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Answer:
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/ @8 t' T) D- @. }It only needs to be designed to withstand the weight of the water!
$ \, @+ I2 n' l9 W! [% ktvb 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公仔箱論壇* x# f7 H. `( u8 X
4 o: U J% i0 B) t4 ?3 rTVBNOW 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。5.39.217.76+ }- w1 ~+ O+ Y) r" ?# i
The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb+ l, @! o* ^4 q6 V7 P/ I: {
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.5.39.217.760 {8 g( }2 p- G( Y6 ~' Y) @' `: p
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,bttvb; k5 M1 w' W) F$ V, e
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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. 公仔箱論壇. m) U+ I7 f4 J( Z0 u8 U
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+ E; z" n$ @4 gTVBNOW 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。
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3 _& p( p& f& m, ?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。
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