本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.77:8898' H8 {* R2 \! D- w3 H# Y1 D$ A6 {
) w$ V3 a7 @2 R# h' C, e" mIf you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇2 j z$ \: |! y0 B% b, u
AMAZING!
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Even after you see it, it is still hard to believe!
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5 p8 p# m' h- n" T, f& jMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb5 h; X% y5 }) N: f( K
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。. ]' j- W4 K0 S" n0 Q
It is located in the city of Magdeburg, near Berlin.
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" o0 Z. @- S( qtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
. j2 d$ {/ T5 p+ i2 y4 DTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb( p: g% p B% ?& `! c0 y; Y8 |( S
% [$ Y- |8 L# I$ O& v' m4 C9 ?5.39.217.77:8898Question: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。, E* D% I4 Z9 `- X
" p+ q) ~- v0 Y6 f7 r5.39.217.77:8898Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇6 r6 R/ _- z& Z6 `5 t L: @' B
Or just the weight of the water?
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Answer:tvb now,tvbnow,bttvb' ^0 L* N& `9 r/ j z3 X2 t- @& u
$ b0 R8 K( ~4 B$ o) b4 m$ dIt only needs to be designed to withstand the weight of the water! 5.39.217.77:8898. i$ Z) J! ?/ z+ L, 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 Germanytvb now,tvbnow,bttvb" G& j% k" y: P- b7 G2 b, s5 A
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.tvb now,tvbnow,bttvb: ^/ y5 X2 o8 q3 p$ p+ l- |8 E* B
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.
9 \4 ?) u, R7 cTVBNOW 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。5.39.217.77:8898$ O; A1 c# q0 |8 S. C# F
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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) M3 _, s+ F) O& k8 E- O( dTVBNOW 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 g8 x: _; {+ j
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