本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb8 p" y5 P: b1 g, i) f3 ^
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If you are not a Physics person, read on and learn a fact of physics.
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3 e4 C3 F1 V# ^: a" h9 P* N0 }9 P公仔箱論壇Even after you see it, it is still hard to believe!
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! W) c6 ^" r9 |0 |9 c( m* n; V! UMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb3 ]( \4 r4 p' A+ L. d) A( W* S
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
; ^, w) Z9 g* v, s" W$ m# ?+ WIt is located in the city of Magdeburg, near Berlin.
7 b7 c4 K+ Y5 ^1 o+ u5 C4 ]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 `8 ` L+ w1 r5.39.217.76The photo was taken on the day of inauguration.' q' z: B/ z1 k
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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2 T! [8 M* t) p7 c2 OQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb, ~) v8 i* ^1 m
Or just the weight of the water? tvb now,tvbnow,bttvb% N3 X+ d1 }) u% r0 c: ~$ H$ a- [
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Answer:6 Z- e5 `6 M* y: b8 }) _
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It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb% C8 i1 ~! Z: n7 T" J4 l/ `
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
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The Incredible Magdeburg Water Bridge in Germany D# n& G: g, R$ A
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 q# R a& o B, t" 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。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. 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。( d- `* B5 L" T0 T& h
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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.
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5 [( z. _6 P T8 \4 E# M# L0 O- z* ]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。5.39.217.769 [. q) p# r+ N7 H2 @ @/ _. n
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