本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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" d; t& s( b& B, DIf you are not a Physics person, read on and learn a fact of physics.
$ c" W' k* F6 C/ Y4 g% CAMAZING! 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 l F0 s! Y# }3 x5 ] r! g" z
% d# I' N2 y, mEven 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!
X* h( N2 ~" c0 s* H3 @4 k) Z& s \This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
3 J) z9 Z; ^) A; ltvboxnow.comIt is located in the city of Magdeburg, near Berlin.
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3 U: v1 ]6 `9 d: p8 W) |0 ]+ rtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
' l ?/ `3 R* a1 o4 v" ztvboxnow.comTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvboxnow.com: m5 ^4 g4 C3 \: A3 ~
' k7 V# t1 j* @' t* a6 p* jQuestion:tvboxnow.com# {( y6 Q& O& p1 P2 X' }
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,4 Y! K( W5 T4 B7 ~; g; o$ q
Or just the weight of the water?
* }* p5 ~; x5 l& UTVBNOW 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。$ d. ?, @ E, a& i; S5 A
Answer:tvb now,tvbnow,bttvb3 x3 \, E3 I5 E5 {
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It only needs to be designed to withstand the weight of the water! 5 \" [7 A7 O6 e# p. _1 j$ K6 ^* g6 Z
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvboxnow.com: Z4 L" W9 v& |' j& n) x
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。$ \5 c$ j, q' |# _
, u& m$ d; h% oTVBNOW 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 Germany8 b4 N; M% v3 C
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. c. P( }$ w- ~% `
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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D7 D/ [) v1 Y R6 K公仔箱論壇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.
3 m' l6 X' ^9 ]3 x$ H6 n# ITVBNOW 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。& t; V" E' Z% J, S
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