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. $ z! E2 e+ L/ l& s, ?( m
AMAZING!
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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!
( ]% ]8 i `1 U# d" t" z" p! f' OTVBNOW 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.
& Q) k* o3 k8 Z/ ^6 t" V! T1 c7 etvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.! k! l. p# Y7 J4 g
9 y/ \ y& X. q! B! t2 p公仔箱論壇The photo was taken on the day of inauguration.! l9 n8 }9 s! J0 t$ U
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
5 k9 A/ Q+ }+ A( a Itvb now,tvbnow,bttvb
7 _; ~* k% D1 M0 c1 l- |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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
9 o! _- r1 L2 n公仔箱論壇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!
; W* E+ e. i: h0 J! {7 [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。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 Germany0 A5 T& D# [$ N6 x4 p7 `
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.tvb now,tvbnow,bttvb1 i; w2 L8 w* n- j h' O
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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* \# x2 r- O2 Y5 A* D/ Y5.39.217.76Construction 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* N" |' C. A( m) @" D
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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。5 Z& I' g- Y! S. a) `- {# @# n
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