本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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: {# K# a: P% v0 O' l# k; Z公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb' k# j( Y7 W4 \, z
AMAZING! 公仔箱論壇! ^' T6 D8 q* P
3 f! L: ~5 l' `' A; ~4 D& `* Rtvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!! v' w+ w& z5 T% _ \ Z
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. {% I$ j' t$ a( P) X8 q5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb5 x; L$ Q; d- } C7 b; Z5 j1 t
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 2 b. E1 h1 e: ^* l4 z; r5 I
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb L+ e0 Y; Y# o% J3 W( Y8 `
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The photo was taken on the day of inauguration.) @5 Q4 U6 V4 I3 r t
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:公仔箱論壇, Z7 n' B9 J4 F. `& r0 @
a$ B0 J# z- V0 l( y, h: d4 Z1 H5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
" z, V$ z# P5 a) T' e! {4 SOr just the weight of the water? 公仔箱論壇1 y7 L6 r5 ]! P2 f; M
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Answer:
' p6 o: l2 B! k1 {8 y! u% }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。
/ `+ @9 I/ m; j0 Z6 Etvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water!
* W1 ` }. b5 X w6 U: Ztvb now,tvbnow,bttvbWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded公仔箱論壇) ^1 z6 {- h) j1 Y7 Y# h$ f4 }( \: C
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The Incredible Magdeburg Water Bridge in Germany
, |+ ~4 K& [0 Q9 MTVBNOW 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 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.! Q# R1 D* g2 b. @1 h3 H3 C9 C! _
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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6 s" R G* i( w8 r# D; O5.39.217.76Construction 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.
6 A2 l9 h* c9 g e9 Y0 ctvb now,tvbnow,bttvbTVBNOW 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。* N5 ~4 O* U! l4 x8 a
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