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.
. P9 e1 t/ a* x1 J* D5.39.217.76AMAZING! 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。; x0 L, D' i9 G5 l7 K8 G! [
3 s, a; E! [5 O* `" stvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!公仔箱論壇, y# A& j( e+ K2 O8 n0 I
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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 P$ Z% y9 c0 I8 ^- v! rTVBNOW 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
3 K1 d" _3 Z& T" \/ [ b5.39.217.76It is located in the city of Magdeburg, near Berlin.& W- e1 _/ ^( i: ?3 C2 C
^4 Y: A# c5 O/ K" I; {+ ` v* jThe photo was taken on the day of inauguration.5.39.217.765 E6 |: i4 x# i9 Q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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b* s+ Q g/ _2 e( e. M6 ~Question:5.39.217.760 ^& }1 m% ~5 Z* O7 q0 q
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,0 D5 y, m4 U; v$ V8 R, N. M
Or just the weight of the water?
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) f) t) v! |) G: z5 qTVBNOW 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。Answer:5.39.217.766 J0 A2 c% W2 ?: K. L( I# J
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It only needs to be designed to withstand the weight of the water!
. a2 `5 s' ?/ ]8 x9 A6 v) @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
7 a* F. \$ T* l* `5.39.217.76The 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.5.39.217.769 `* Y# V& y. N( s) [% S
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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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. L) R- P; E5 i# q( j3 w
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 K+ f A5 J- k. j/ y
- n) K% R* R4 @5 V% M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。$ X3 K$ a7 w' g$ P7 T/ [, f3 t
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