本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb# p+ q3 T! K1 d! t
AMAZING! 公仔箱論壇4 W- f3 Z* `% G( o
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。+ r: E. d* i' o4 \: H0 H
Even after you see it, it is still hard to believe!5.39.217.77:8898' v# A% \4 f/ m2 O k" S3 S
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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。. j2 [* L2 E& Q. ^ `
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
9 @! h7 i1 l6 j$ z: h$ ^5.39.217.77:8898It is located in the city of Magdeburg, near Berlin.4 v8 p O0 _( I6 E b
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The photo was taken on the day of inauguration.
/ A2 ^" e( K" @" w }1 f# `( E公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇: n& H) h- Z1 V! [+ W3 i
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Question:5.39.217.77:8898$ M. ?/ }. j! S/ {0 P) f) ] p, r
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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。- w% X' g& l; [+ F5 A
Or just the weight of the water? tvb now,tvbnow,bttvb& F+ W8 Z2 H" e7 M" i
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Answer:
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It only needs to be designed to withstand the weight of the water! / b p( d9 C9 k
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 Germany5.39.217.77:88985 X& p9 n1 a G* A& 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.
j4 ?$ s7 I, I7 TTVBNOW 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 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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6 R2 R5 S [% X2 P# pConstruction 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.
2 n% D! n7 k* A* {* K公仔箱論壇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 [6 B% S6 t5 G4 V* V2 Q
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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。, ]' L$ Q: o; H
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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。6 N% A% Z' E2 j! B' w7 n- p. t4 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。; P( d) q: }- U6 q7 }3 o7 O
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