本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb% @6 c$ C* J5 j. R* R+ T3 I
" V2 b8 g. ]( y- G* o* vtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
" S0 z, l$ y) s6 d8 `# @. r+ YTVBNOW 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!' Y5 d4 L! U2 O0 ]* T# A
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3 d% Q2 E# b4 N# d2 u, |- |$ xMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
* V1 l z$ ~/ G3 D; L8 Atvb 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.
; v( s2 ^# F& }! P+ C4 n5.39.217.76It is located in the city of Magdeburg, near Berlin.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。. V# Q4 d, @) m+ n$ ~3 p! ~& P
2 M# J7 y' r0 W; K8 xThe photo was taken on the day of inauguration.公仔箱論壇4 p$ ] ^: L7 w$ n! S! M& Q1 N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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% ^. q# M! F* D3 f! {7 TQuestion:5.39.217.76: f* i' j; E: X$ F" p2 P
- L& O8 \9 H1 B/ R% b$ iTVBNOW 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,
5 ^, B2 y% g3 x; F4 Ztvb now,tvbnow,bttvbOr just the weight of the water?
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/ @4 c1 j K, o M' A" V9 t8 x公仔箱論壇Answer:
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+ r/ K" M* [! m, b0 p X4 `. y) |$ l公仔箱論壇It only needs to be designed to withstand the weight of the water! 公仔箱論壇, w# L' t3 ^( d+ f* s- 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 loadedTVBNOW 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 J: J* `; {6 B! A( W2 k! h8 q
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: J; P+ h" K3 ^2 q: @The Incredible Magdeburg Water Bridge in Germany公仔箱論壇: a0 o1 [- b% _4 G. O6 K7 d; ~5 e# J
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.5.39.217.76: [. L. r5 Q0 p% X% A% F
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.
; t6 f) K8 m/ ?6 f+ L; uTVBNOW 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。5.39.217.76+ k& b& ]7 |* \# H3 b8 `
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. ; a4 V; `3 U7 V5 k; U# N3 a
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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。) ~$ i0 `) |; M E' |
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$ D' k5 g1 r ^公仔箱論壇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。& X* }& ]! P' j! G- p" F( ~# Q
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