本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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! g. B7 Z* L6 Otvb now,tvbnow,bttvbIf 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。* A" B$ k9 F8 }" G% k
AMAZING!
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Even after you see it, it is still hard to believe!+ u# V4 w6 I. z! X
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1 C7 H' S: F) N: r, _tvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
! r- Z6 k4 ~4 [ [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. 公仔箱論壇, b& @5 D" r; u7 e, `1 t' Y8 F% d
It is located in the city of Magdeburg, near Berlin.
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" K: L$ [* ~7 b# f$ Ntvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
: z0 _' n+ w% Z7 ETo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇3 M5 C# _/ m- n6 m
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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% F/ x! A! z. I( q
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
6 U" ^ r- {: z; bOr just the weight of the water? 公仔箱論壇; u: |, {! ]0 F: m( L
: j; Y4 m* `" E, ^; o' mtvb now,tvbnow,bttvbAnswer:1 D1 S5 N/ J* q4 Q6 g- ^( b9 ]3 ^
) m) k& |- @+ |* Wtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water!
, P+ G$ t2 k$ E. F$ N9 M. rtvb now,tvbnow,bttvbWhy? 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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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。. b" M& ]6 C/ R4 B9 O
The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb, g+ f% U. H$ _9 Z0 Y' S: L& d
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.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。/ X) {% l- c9 T6 [8 F7 X D; U
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. ( O( X: F$ c) n; { w% H: Z* z( g& Q5 X
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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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