本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
% E$ O5 W( b( }- E* FTVBNOW 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。6 ?% u4 Z, W5 j1 w7 w2 U- L8 R9 }1 q" f
If you are not a Physics person, read on and learn a fact of physics.
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/ \1 E- r/ ?3 J7 }! G) BEven after you see it, it is still hard to believe!
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3 Z1 V, |! m, Y* y, Z' l5.39.217.77:8898Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇8 o9 [$ D/ r# p$ n1 r
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb- [! e1 b9 e% ~0 |, N
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.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 k4 h$ d" a: ]4 L/ R- o
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:' w9 k: N: e1 I) Z
公仔箱論壇& @3 I: s Z0 w% R
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, }9 g* B) A! H
Or just the weight of the water?
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- J. l+ J- d% X' h. @1 M9 AAnswer:1 m2 `* f/ o! m( D
8 i- r, Y, r1 R% D! U) @5 Gtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water!
$ n1 [: d% y2 I4 k, u5 `( `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公仔箱論壇" R( U' |! y! }- D+ R2 a' c
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5 N% x4 }; d. b& F& ~( P/ Ntvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany
3 c" Q( Z3 l+ Ltvb 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.
?7 _# p7 G5 x. V/ k" 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。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. 5.39.217.77:88987 ?3 z3 e2 p4 f7 X( b/ C( H* T
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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. 5 D/ |: z, ?. T ?: j4 d
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7 M- ? f6 ^. ^, C/ [" _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。
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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。2 B( P( `( Z b# }1 T/ X
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