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。+ g3 J5 |8 R6 n/ A* @* Y8 P2 s
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If you are not a Physics person, read on and learn a fact of physics.
. \, y3 G' W2 o& U: m+ W& Qtvb now,tvbnow,bttvbAMAZING!
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" R( h8 f8 v# Z1 lEven after you see it, it is still hard to believe!
: D8 B% X7 m5 o \$ S5 r公仔箱論壇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& ^ n6 j$ ~* C6 P
& n i1 Q2 G& B+ N/ q; K2 sMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
4 I6 D% l6 G" I. d C5.39.217.76This 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& e' q, a4 N) ], d
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb& R0 x T- b1 X
! ^& h4 A5 y$ F' Q0 XTVBNOW 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 photo was taken on the day of inauguration.
: V- [ c, r+ k w: n" [& V9 ]* V公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76! C6 ^/ c# _7 q% L& z
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Question:
1 u5 Z/ k" M" a ZTVBNOW 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。5.39.217.76+ h+ _0 x$ A: J, F( t+ M
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
6 g* `1 O$ B) G; q, R. d c9 Gtvb now,tvbnow,bttvbOr just the weight of the water? * e; w0 ^# G, h4 e
% U2 l b. Z3 T! }: ]- e! G$ w公仔箱論壇Answer:& z" M8 n# l# y
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It only needs to be designed to withstand the weight of the water!
. v1 b% E z* d: `0 U% [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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1 Z3 I" L' P( S6 X9 t: s5 D5.39.217.76tvb now,tvbnow,bttvb& G3 Y% \ x& w3 _' W$ i
The Incredible Magdeburg Water Bridge in Germany
, v& E) c* Z, l8 v- W! ~5.39.217.76The 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.公仔箱論壇1 B" ^2 T$ `: Z' V/ b1 y
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. ) |( i4 B4 O- l$ J( ?9 L! F! D
. C4 k, ?0 T0 y$ RConstruction 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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. O( r4 D" k1 t ~0 R) {3 [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- u8 }* ^- I4 P2 B! g
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1 m& J: ^! M2 w5 n8 s. Q: O+ v7 M# xTVBNOW 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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