本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb2 P: X" p5 C& P
) J2 C" a' k( {: y- jIf you are not a Physics person, read on and learn a fact of physics. 3 ~( t0 A F" {6 r
AMAZING!
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Even after you see it, it is still hard to believe!
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3 j( X1 K# o9 k( R9 x1 L& t公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。6 U; a) Y( s. ?3 j0 i
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
1 p7 q4 Z. v/ P) \* g; iIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.9 L/ [& \! A4 s
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。# G. Z) h) V% r3 s, |
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Question:, h$ {1 z: c+ Y4 s- @
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,0 N: C+ J1 r& p+ ?3 p2 B4 j
Or just the weight of the water? : S" E: k, F9 C0 m% G
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Answer:公仔箱論壇5 x6 Y7 W0 [4 L+ U. \1 ^# p+ p
# D5 m4 _ h+ |It only needs to be designed to withstand the weight of the water! 5.39.217.76) R/ H, n# M! D0 a9 |
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. r6 K" z* G. L a! T* F8 f, k4 c+ m
: |7 T. G4 z4 k3 t8 h" v2 ^3 r' }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。9 \. z% s% k! F
The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb- o2 c- M4 A& G6 \
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.
- [0 o+ T$ S/ P8 N% S5.39.217.76The 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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8 b; N' x6 W8 `; a7 r i" 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。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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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。; c8 p& Y; I$ @, c" Q* s
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