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。0 c2 g% l5 k+ }& x1 F
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If you are not a Physics person, read on and learn a fact of physics.
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$ t/ V5 ?! j( O( u公仔箱論壇Even after you see it, it is still hard to believe!
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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。) P9 a6 x' ?6 l: [3 L
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
) z9 Z5 q0 M$ d; P/ ~3 ~6 D! }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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
/ W# L9 w9 R$ g" n' ?$ A6 wIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
7 I% Y& X7 Q& k; f5 A! a" itvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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 @, T5 P d) h8 S+ m
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Question:
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) J: A, A. W2 M3 r: iDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 ]8 N5 t. z# a# ^/ A* v0 Q8 ITVBNOW 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?
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Answer:
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It only needs to be designed to withstand the weight of the water!
0 h7 s2 Y+ l& w' I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# E) M. e/ b. Q b! h
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The Incredible Magdeburg Water Bridge in Germany9 R, X: q6 L2 R% B' Y. c( X
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.
' A) j7 J; c* L) T& n+ {5 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 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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- s* O3 l0 r2 x& iConstruction 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,bttvb7 H! a7 I- J) }3 h, S( Z9 O
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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。& c! Y, @4 n z* P7 q
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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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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。' P; w( {9 F1 d/ A
發表於 2011-10-15 09:35 PM
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