本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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3 ~1 s" t( U6 atvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
; M7 `; L K- I/ k, ^+ B9 c- x+ Q公仔箱論壇AMAZING! 5.39.217.774 b& a% h3 A6 P$ ^( T8 k
# v1 U) a" y; H M- X5.39.217.77Even after you see it, it is still hard to believe!公仔箱論壇; u `( O! @1 Y# F0 _6 k- u
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇* M, T: ~, D r# G! H
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: O- z! R6 q$ ~8 p1 N7 C9 S
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb' b- X4 Q# S! [, [9 e' Q" o5 ~# s
3 o0 J0 t7 C' a/ A( D a5.39.217.77The 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。% I$ ]3 p7 K9 U( u. t
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb! z: {, j8 d4 F( ^7 `
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Question:
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. K6 b! Y" u7 R$ p( c6 q+ |公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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。: E8 N3 P# y5 _8 U7 c, w% h
Or just the weight of the water?
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2 D$ b- b) g5 N. p! r. `7 i5.39.217.77Answer:7 _ S$ W3 @; k
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。/ j! M. R, } [0 A, O! k+ `
It only needs to be designed to withstand the weight of the water!
: ]" O& j9 {0 aWhy? 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 GermanyTVBNOW 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。* U2 r$ W" ~! [! A4 [, E0 ]( j/ f
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。! b+ y$ }5 [0 G$ \
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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0 \% x; a9 b' b( i" G3 {) f2 D% ktvb now,tvbnow,bttvbConstruction 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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$ u. S d7 ]( \: q5.39.217.77TVBNOW 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。' [! _4 z2 ? z' f; S7 ?" b) w1 v; n
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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。' @, Y' j1 D; \' u6 k
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