EVER SEEN A RIVER OVER A RIVER?
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. 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。, b1 M' I& S r) ]* N
AMAZING! 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。2 z0 K% W! M$ l; l: B
' G; W" Z% t/ u) \2 G6 v4 N# z" t公仔箱論壇Even after you see it, it is still hard to believe!公仔箱論壇/ O9 I* |+ ]4 U* u# _ _ A: G
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& e. { t; G& w7 q6 k. f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! tvboxnow.com5 g; t) ]: Y3 d# L4 _1 L6 X
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 4 z% H) Z* l8 R( C
It is located in the city of Magdeburg, near Berlin.tvboxnow.com$ w g* T2 w9 m# o
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The photo was taken on the day of inauguration.公仔箱論壇' E. h" H. Z; L5 h6 _$ i8 T$ ^% ^
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvboxnow.com: ^7 n+ E7 E; @) F; D
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Question:
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. C; Q3 K- ?8 o; a公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
$ @, A& Y& L7 B4 [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。Or just the weight of the water? " V* m7 ~) u" a* R
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Answer:
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It only needs to be designed to withstand the weight of the water! 公仔箱論壇$ x- x% ^/ ?6 E7 D
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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1 H# j; n ?) qThe Incredible Magdeburg Water Bridge in Germany
8 n4 I+ s, y9 ?" U0 @9 z, v, J# Ztvb now,tvbnow,bttvbThe 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 d6 M3 h1 ]% k: l5 D9 u2 }
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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+ H& W3 D+ K- U5 z2 {# G3 Rtvboxnow.comConstruction 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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6 i2 A+ _! J& 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。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。& n% j8 t d7 l" S3 @9 v; t
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