本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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8 E% [7 p# L# Y3 ]; Q: Jtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics. 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 v2 e' T( q0 i6 l7 P6 [: ?
AMAZING!
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Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb% E1 z* q+ z. K5 b
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4 L! z7 o+ }, E q3 k5.39.217.77:8898Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
?+ F9 V# o, J% C% b. ?This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
V9 ~5 Y1 N0 C3 z# ZIt is located in the city of Magdeburg, near Berlin.4 d% q5 }* n3 N
( k8 j& s6 C! R9 |2 D$ y( H- R' w5.39.217.77:8898The photo was taken on the day of inauguration.
3 e C, R+ @) H0 O$ ?' j5 z1 X' d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9 u9 E& f4 |$ E2 C' l& D
4 U& D7 b G. e+ q$ | `tvb now,tvbnow,bttvbQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
. y( r1 v* d+ I0 ]$ d5.39.217.77:8898Or just the weight of the water?
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/ L4 M' d9 i! |3 M) ?" N6 f6 `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。Answer:
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/ Z/ o5 h: j" h. v' R2 A3 ^3 g. p& c公仔箱論壇It only needs to be designed to withstand the weight of the water!
7 `& D+ Q2 S1 I* Q: q- V% W# JWhy? 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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9 z8 F7 J8 ]; F9 Btvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany
1 O8 ^! y: g! g/ Q& }5.39.217.77:8898The 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.5.39.217.77:8898( E0 H: m I6 k% p
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. 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。0 a1 O0 H7 e/ o1 v
0 x% a) d: s/ d; a+ P: u# J5.39.217.77:8898Construction 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. 4 U4 B/ C& k" I' w1 u( ^
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: A; L+ g/ [, z4 M# x$ NTVBNOW 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。
$ Y6 f8 h9 r$ C) N" @9 ]7 FTVBNOW 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。
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- C) A4 t7 x, N* u2 b" q# g5.39.217.77:8898公仔箱論壇$ \" J% C" n$ @. l. i" s( t
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. k" f {. Q' F7 \2 ]! i( ^+ gTVBNOW 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。 |
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