本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 8 ^7 Q9 @ k- i# H( n, b
: a2 b, n# k0 vIf you are not a Physics person, read on and learn a fact of physics.
/ F/ I: a5 l& Y. @; rtvb now,tvbnow,bttvbAMAZING! 公仔箱論壇 d# ?% [+ b1 p
% s1 u6 d3 [' z& u- Y7 ^. PEven after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
, l! l0 f4 k- G- }) `( E8 W: rThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 3 W0 K1 G1 c# q3 b7 \3 N/ g9 t
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
# }9 A( v% j6 S1 N, utvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists., D, u, C! i: S3 e
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
; }/ G. s, ?2 Z! ltvb now,tvbnow,bttvbOr just the weight of the water?
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: G/ h# r4 M# s9 W2 E+ r6 x" H4 uwww3.tvboxnow.comAnswer:
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It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb( S. J- X1 P! d9 M" e; |
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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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。4 r! }8 I( P" `) u8 ?" y1 j
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。. m+ G9 f [ w" X3 l' e( Q
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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% L3 P- d0 S) p. c! ]: @4 eTVBNOW 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。
: w8 Q! ]( Q& @8 H, _) L* c0 ^5 JTVBNOW 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。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 J5 x6 K/ }5 L! H+ d
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