本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ' U9 `7 L+ S+ l6 T
/ h! t% x. J1 n2 g) A2 W5 ?If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇% Y; v4 G: u6 i" ~1 U: c7 |2 ~
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Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
9 d0 k* [ \% s: Z% Z8 J8 XThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 0 h/ |& w; H7 w D3 s
It is located in the city of Magdeburg, near Berlin.
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8 o5 h5 h$ z! |3 C! v V! C6 wTVBNOW 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。The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb2 E" d0 G* _8 V
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.4 p. f, `* x+ i) u8 p
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" v- \8 v9 h8 V( l- m; pDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
: ?/ q5 j9 `4 e+ C公仔箱論壇Or just the weight of the water?
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Answer: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 v5 p9 b# @) h7 u
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It only needs to be designed to withstand the weight of the water!
% g# ^+ ]+ U9 Z9 M1 K9 l# lTVBNOW 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
- y, U/ m8 H# X9 |2 f( 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。
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The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。+ s) l" s* Z+ g) ]( x
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.tvb now,tvbnow,bttvb0 `2 z8 E! f! h% B2 T" z
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. 7 T! D, N0 G4 Y$ D. {4 Q
; D" w4 ?' P' W! I& N3 i$ w J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.
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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。* K2 Y' U4 d4 I2 m2 v+ S% b- n) ]- f
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