本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76, h# k& |3 p1 m9 E
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If you are not a Physics person, read on and learn a fact of physics.
( x& u8 e; O+ O; S3 i公仔箱論壇AMAZING! 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。, V% _: L& p7 O+ b( M/ G! j
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Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb& \+ U# `/ T# q) C2 d ]! W
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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。, ]# f. l* p; d, l7 B
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
1 s3 @2 A/ o3 X' X1 g( w& D$ tIt is located in the city of Magdeburg, near Berlin.5.39.217.76' p' S# Z) r" L: @
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 V- O- ]' |& g2 Z: q. \
The photo was taken on the day of inauguration.
/ M# \& A5 \ w* b# ]0 ^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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.76# d7 e9 Q6 s; Y
Or just the weight of the water?
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Answer:
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# x" V1 D c7 C9 z+ C+ @公仔箱論壇It only needs to be designed to withstand the weight of the water! 公仔箱論壇9 b- J v! B' G9 r5 L: F
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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) @: g# s: F- z* 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。The Incredible Magdeburg Water Bridge in Germany( v1 H. r, G# z) x
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。1 A, \4 n% n+ i0 V$ 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.
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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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+ @% K2 C" V; y8 l$ x( hTVBNOW 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。# H0 {0 n9 w+ z C
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發表於 2011-10-4 11:33 AM
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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。. _7 L+ Z. ]1 G4 u* W% `
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