本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76' U/ H' v9 [. ]3 c
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If you are not a Physics person, read on and learn a fact of physics. ( c- y& T2 A+ ?; i2 g
AMAZING! tvb now,tvbnow,bttvb! e( z8 O9 T: m# c6 B( E) T N- }
$ E( _/ _; u' N) ntvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
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8 W1 ]) U q1 O( k% T; l' t5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
/ V: E. ]- C2 C C c2 Z5 M6 p; j' h+ V公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( \, y# g5 {" M+ I9 kIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.1 m" \- ~4 I m) K& L& h3 A
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:公仔箱論壇 s7 d* M# o" ?/ c% a
' X+ U2 {" U6 f; j/ F( _Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.762 v. F* q0 L) {1 \
Or just the weight of the water? 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。8 a& r2 q M5 X* ?
9 |$ i: J& I+ t/ V公仔箱論壇Answer:
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! b5 I* Z& V0 E" ~# ^公仔箱論壇It only needs to be designed to withstand the weight of the water!
$ ]' ]5 e! r; r. oWhy? 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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& x: R6 e4 I9 c) U/ G, {7 G公仔箱論壇The Incredible Magdeburg Water Bridge in Germany公仔箱論壇/ P( F: K0 l+ ^( C! x0 o
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.. y+ k) R7 P" z/ M
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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0 B2 R% A8 _. Y0 SConstruction 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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