本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb3 b4 v) q( q* K% b9 A* I
- i/ |) `0 m; _1 e- c7 x% \tvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
5 G6 z- m; I: G. n, e/ otvb now,tvbnow,bttvbAMAZING! 5 ]# v& Z- h% M U d5 y
# r( E# y3 w; c1 y. e$ eEven after you see it, it is still hard to believe!tvb now,tvbnow,bttvb4 `# W# h k: C w. {
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) \2 | W- I! Z7 K2 G0 G0 ]5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.76* v g2 k0 _5 D- [& ?0 D
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.767 z. R7 h6 q8 f. i4 |! f
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.公仔箱論壇& t; n( j2 f" N3 h3 ?1 `4 g. d
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.! j+ ]1 S8 p; y8 f! `- B# s% y
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。' h: t" e/ F: n: W
Question:
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0 \9 h+ s) M2 _2 R& A3 ?Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
- D- x7 Z3 u/ G8 j* ~& D/ `+ aTVBNOW 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。Or just the weight of the water?
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$ j9 l* U2 Q, f: k0 r( O( W5.39.217.76Answer: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。) f. A+ Q. `1 w& ?. 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。% \: i& Q1 ]0 l( P: _+ N
It only needs to be designed to withstand the weight of the water!
+ i `7 A" ]. B; _" |3 n公仔箱論壇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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% `/ o7 Q* I* ^) cThe Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。: t) k4 P& m; a d. D# l2 E
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 _. `9 u5 q5 A5 j, P% oThe 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. tvb now,tvbnow,bttvb- y2 X0 `3 q1 T, }, u3 r- C* [* r7 @
3 t) v4 g3 Z( p/ h+ ^# C' JConstruction 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.
8 f" I$ r: N% U: nTVBNOW 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。公仔箱論壇" V: I4 W% K6 l1 R1 Y
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