本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 + t7 t0 `1 J( o) J- o; [7 T: k
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If you are not a Physics person, read on and learn a fact of physics.
6 u3 H" O/ d+ ?7 j3 {# u$ Y* wtvb now,tvbnow,bttvbAMAZING! 公仔箱論壇9 n, E4 v0 E3 r6 n- a
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Even after you see it, it is still hard to believe!公仔箱論壇) G, C N! s- M
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.77:8898& r. d; e# ~; ~ V8 p1 f2 Y1 o) x
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇% o3 c2 x$ z% J
It is located in the city of Magdeburg, near Berlin.9 C% k: r: O7 f0 e! f" h
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The photo was taken on the day of inauguration.
: G: r. W5 L$ E: ~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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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1 ?% ]0 o% @( S' z+ |公仔箱論壇Question:
1 C4 x6 L- N$ E. k: \) v$ 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。
! z# Q% }1 _% @/ S4 R5 f2 n, u$ mDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,& D; x8 i. M) |; \, c5 \( n! ]
Or just the weight of the water?
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- M8 e& l! L5 w+ \tvb now,tvbnow,bttvbAnswer:
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It only needs to be designed to withstand the weight of the water! 0 a( n; M$ k8 {
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.77:8898; V- ~ q8 K& `8 {
$ D2 H' \ d+ c( {! K+ O$ dTVBNOW 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。
1 J3 U: e! l% l& c7 Z) ]tvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany: c% a/ B" p+ A' ~/ }2 e- S8 C$ |( z
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.tvb now,tvbnow,bttvb& b% ^9 h, s3 A6 n( Q( v+ O6 n# M
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. 公仔箱論壇: d! ~2 W/ u. m' [
9 e6 p" b, @# E" T* dtvb now,tvbnow,bttvbConstruction 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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! {" ]/ u+ y t" g& WTVBNOW 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。! |- q! H% `% h- L
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