本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 2 Z7 T( R# V- _5 W# V/ g& }
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If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇& Q1 Y3 L$ V: a) p& ]0 Y9 ?
AMAZING! 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。: }3 K* ]* H- }4 w2 M0 ^6 w3 ~
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Even after you see it, it is still hard to believe!5.39.217.76" `; L% x1 A$ H8 d* [+ U0 ]
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$ E4 ~, Y% ^; @. L' z5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
/ z7 ]! F: T. F! k$ L: kThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 0 U% W- Z! Q* h) R) l
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.公仔箱論壇" h" }2 o1 X# J" O6 N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇8 _3 C' K( U! B" R/ b9 C# l9 C, H2 `
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Question:5.39.217.76$ a6 @% K: c- z+ ?. 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。$ e0 f, [# h5 Q/ }* r! o: E: g
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇+ C/ E: B" o5 a/ L
Or just the weight of the water? 1 p2 Z. z, c& u3 y V' _# t3 a
8 T7 e- ^% J4 c7 a公仔箱論壇Answer:tvb now,tvbnow,bttvb8 |0 ^( F. l: i j7 _9 J/ H( M
: d6 w9 d9 O( B5 h4 gIt only needs to be designed to withstand the weight of the water!
5 l) n { W) Z: dTVBNOW 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。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! _: f! _+ [# `, H% g7 W7 u
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The Incredible Magdeburg Water Bridge in Germany
% m7 f d7 F; j% U; o8 ~公仔箱論壇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.& ?4 b) ]5 Q C" w; T ^6 I* s, 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. " H+ D1 @' E; I- L2 O! y
* ]6 F! k4 O5 @5 c# v$ _1 a公仔箱論壇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。8 d3 m" O1 B8 Z+ Q
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i9 e, @- y8 ]/ d: 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。
8 s0 g, W% b+ `! E: B5.39.217.76- B$ T" j! U9 t9 ~. y N
; Y( V) Z$ W4 o: g$ Otvb now,tvbnow,bttvb5.39.217.76/ W2 |- ^" G7 Z7 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。; w) @2 j( A1 \/ A8 z% L
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