本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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 q" J; s/ p% U3 z* n N
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If you are not a Physics person, read on and learn a fact of physics.
, L; S% ]& p9 yAMAZING!
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Even after you see it, it is still hard to believe!
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/ @2 p- C8 \0 h% I3 NMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
4 A- w' B" T( s0 g! JThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
7 e3 A- K& V6 n9 g" XIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
3 J; k4 Z- _6 y2 h3 s4 [/ k, [" XTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.www.tvboxnow.com: I. o: z4 L+ j
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Question:tvb now,tvbnow,bttvb6 d0 a# I1 g! S2 h
, Q9 ]4 ?, x! f4 ]2 U- f4 QDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
/ {! T/ {1 _: TOr just the weight of the water?
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Answer:
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5 P" P0 v" Q# n$ R: }7 T2 y$ G% qIt only needs to be designed to withstand the weight of the water! $ X; D a8 |" c* ^" G1 e1 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 Germany
- H4 O& a9 D; g0 w. eThe 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.
8 h" V0 P& x2 ?5 f7 @3 Q公仔箱論壇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. tvb now,tvbnow,bttvb: ]! m$ C( j% A
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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. 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。. Z: S( |: V% k, G1 k; b
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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。8 z3 w, [9 t0 S" G& R, R8 B2 X. v
/ x J6 L2 J V3 e8 @8 h公仔箱論壇
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