本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If 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。# L: o2 f( Y7 N
AMAZING!
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Even after you see it, it is still hard to believe!, a' ?) ?2 x0 Z% i3 q) E! d
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6 u3 q5 a9 M2 k3 f/ ~0 r# a0 n$ e, A公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
% X7 U b0 }" F W _tvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
3 v9 [! @2 M! K5 j9 H# g9 EIt is located in the city of Magdeburg, near Berlin.
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! ?0 \ L" t* `3 \5.39.217.77:8898The photo was taken on the day of inauguration.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。2 {9 s; m* Y& t! k0 Q. N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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4 k' c3 Q x: P3 pTVBNOW 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 W, H( r& `& [0 d1 Y W: Dtvb now,tvbnow,bttvbOr just the weight of the water? 5.39.217.77:8898' L% H, s$ f/ z: E2 |
3 N4 o' L* N( `3 n5 q6 rAnswer:
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: T! O7 `- _5 B CIt only needs to be designed to withstand the weight of the water!
! r: D% R/ W9 GWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.77:88989 P' P) a8 u% U8 W
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The Incredible Magdeburg Water Bridge in Germany
7 f% @& s% q- x/ D mThe 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( z& }/ E0 V3 E1 D
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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5 U# d/ ]4 h, ~$ S) F* x+ M- W( OTVBNOW 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。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. 公仔箱論壇+ R8 x: N+ g+ n# e @# Q) n
; w' Y/ `* J$ _6 | T& X' `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。+ Z5 v# f' _4 c4 j- v4 D- N
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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。" `% K& U0 q' Q" V1 G' i a
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