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.
( M# S* y; H9 M! _2 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。AMAZING!
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Even after you see it, it is still hard to believe!
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( f7 @' U5 f. _1 Ltvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.76& ]0 W9 i5 E$ I. i/ P0 B6 ^
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。9 Q3 b" v: z0 s' C! z5 g" E" p4 q$ S
It is located in the city of Magdeburg, near Berlin.公仔箱論壇+ K6 G, }. y {" V. P% J
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The 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。: O S/ ^1 n5 B/ p
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.8 [& \& r& k. T/ ?
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Question:
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. H T, ^9 @6 {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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,+ X; U B2 b( s. q6 p
Or just the weight of the water? 2 K# g* {3 g% G7 F4 R% H. Z K+ B: k1 L
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It only needs to be designed to withstand the weight of the water!
( |8 O8 l9 V- a, a7 h8 C5.39.217.76Why? 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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The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb" V/ v. F* o" N& ~5 d
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.5.39.217.765 O) r5 i: S7 L- W) x; H
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. " g# r) M' s! P z
9 ]3 H) [8 U; H# {! Z: j2 S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. + T' V, s* h( \, H
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% J/ f! f5 k+ a \2 Z* F, ltvb now,tvbnow,bttvb公仔箱論壇+ t* J3 W8 r! d% d" T+ {' E
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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。 l% F% B6 a L. P: P+ l) P
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