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. os.tvboxnow.com/ G! j$ ?1 U' T. m% T2 Z! V
AMAZING!
% P2 ~7 T* P8 l0 I& \ jtvb 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。4 A( S! ]; k$ A
Even after you see it, it is still hard to believe!os.tvboxnow.com5 P1 {, h. F1 T2 l+ H! y; w c
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$ ?0 p7 T2 ?; Z& q x' vos.tvboxnow.comMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
# U% J& ?% s2 D3 ctvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
3 e1 ^; _. @! g7 \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。It is located in the city of Magdeburg, near Berlin.公仔箱論壇1 \. i+ Y! p0 M8 A5 d" T
x9 N2 ~1 z6 m) l( B公仔箱論壇The photo was taken on the day of inauguration.os.tvboxnow.com' h, i* i) h' h! w6 I( O4 `- [% c
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:os.tvboxnow.com ~' x% h& h) N
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 H- U4 D, ^3 o( h( z3 I$ Vos.tvboxnow.comOr just the weight of the water? 公仔箱論壇9 T! V! X" k+ @% Q1 g
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It only needs to be designed to withstand the weight of the water!
- U: f$ V7 T8 z4 k8 A6 H' ~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
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The Incredible Magdeburg Water Bridge in Germany
' k$ h4 @% ?9 G! B- ^7 WTVBNOW 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 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5 k2 N/ M1 t f$ Y6 `
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. os.tvboxnow.com% O( A" j9 B, x3 o2 n/ F: o4 g
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