本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics.
( y: h) c* C( c公仔箱論壇AMAZING!
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' A: q2 d- G" [9 B& b! ~& zTVBNOW 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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4 O1 b/ Q" n: ]7 B公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
6 k+ K! P6 c2 Vtvboxnow.comThis 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5 E' q7 c$ F: L# Z
It is located in the city of Magdeburg, near Berlin.
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: w$ ] }- o; }+ a; TThe photo was taken on the day of inauguration.公仔箱論壇1 C+ L/ ]1 c7 }4 x! |' \3 B
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.+ f: }- h. d: [- P
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。1 A% ]) W: Q+ { E
Question:
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+ N5 V6 c& ^! u' [公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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& j/ [: I+ m3 _6 i: S1 ^/ OAnswer:
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It only needs to be designed to withstand the weight of the water!
) }2 \. x! ?) v1 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。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& C/ I, j2 e. o. _9 Z- F
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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。7 c* |9 |* D$ J5 O! q$ X' T3 }
The Incredible Magdeburg Water Bridge in Germany0 V% C& \& v: N3 h: |
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9 a: }7 K' ^& E! O2 f
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. 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/ y, A" ?9 C, M/ u
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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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