本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76; o3 j3 j& w* o- b
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If you are not a Physics person, read on and learn a fact of physics. # Y9 X/ z2 A2 ?7 X# N/ H
AMAZING! 公仔箱論壇! [/ A) w5 Z# ]0 H
9 E" s: r+ |! @ JEven after you see it, it is still hard to believe!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。4 q1 |" b; v( Z) M3 H( e
, W; l. s- ^7 ~: H! n$ bTVBNOW 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 D( |- r* Y) f% I J' k* T7 v' ~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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇# j" @+ V1 J8 g" {$ H
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
* ]" P- ]/ V5 F a5.39.217.76It is located in the city of Magdeburg, near Berlin.
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2 [1 J. J2 e8 I9 }3 @tvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
& u: Z% w2 S+ t) e, I2 Z" ~To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb8 @* _. {, J- P. S+ c
0 o) t+ o" P# s9 [% f& T# B公仔箱論壇Question:tvb now,tvbnow,bttvb6 I( q) z- |7 {6 _1 U2 F9 Q
8 C D& e! m2 t) e8 D2 _6 B0 G$ jDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
8 E) z! X$ ]0 lOr 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 t$ Q9 s# }5 S/ p
8 p/ E& K9 g, j# l: j8 e- m公仔箱論壇Answer:
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7 D5 _9 ^& t9 t1 H. Qtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! 3 G7 |1 m) z" P' l0 T4 f# x$ o
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公仔箱論壇9 J. v( y4 {9 s" Y2 b
. F3 S2 H2 X1 r m& B: K$ mTVBNOW 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。2 l2 s* |& V2 A# I0 d
The Incredible Magdeburg Water Bridge in Germany
- u7 U* V3 D P; y1 `1 DThe 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.
% K+ F/ Q3 p0 O) D1 N5 m# BThe 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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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. tvb now,tvbnow,bttvb+ ?. M2 Y' a+ I4 q
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。: C, } d+ i$ t# H4 G
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t. x3 J. a0 y6 U( q+ T5.39.217.76
9 |( {& E( {1 {0 k$ ^$ l公仔箱論壇tvb now,tvbnow,bttvb7 F: p7 c( l2 g, n. Q p
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6 z) J2 S: ^) _6 y9 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。公仔箱論壇3 W: _# @7 q6 X& `
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