本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
8 z, e" E1 V# X0 a" w7 P( PTVBNOW 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。5.39.217.766 x" V7 y! Y; C! g
If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb0 `. E& o) [& R
AMAZING!
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Even after you see it, it is still hard to believe!
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8 s% ^( b: ~& C& l4 K7 V% Q! VMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! % \1 C9 q& b( n/ N' Z
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
2 M( V% c( e6 c0 ~: S7 H9 x- BIt is located in the city of Magdeburg, near Berlin., z& y/ }4 {* U, T/ c* n5 I
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The photo was taken on the day of inauguration.公仔箱論壇3 {! [5 x0 @ ?% G
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇0 q$ _! |; n; P+ l% u% k
6 [. I7 |) U' i( k4 rtvb now,tvbnow,bttvbQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb, q* q* c9 z2 Z B- Z$ n0 M
Or just the weight of the water? 公仔箱論壇6 F! c; Y8 \* Q
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Answer:
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! ~$ o* y. W$ L8 L' Y9 }; M* Q5.39.217.76It only needs to be designed to withstand the weight of the water! 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。: r) o& P0 E/ g% Y
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb8 w! F* y! v3 u' u" T7 c
1 K( b3 O2 {/ n( ZTVBNOW 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 j W2 t3 nThe Incredible Magdeburg Water Bridge in Germany( l4 V; d) a. }, q& w
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." @) h6 L" K, L) e) ^5 ^# _/ \9 v
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. 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。& u$ T% V( n5 U% T9 \3 }
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$ a8 e7 ?# d! J+ {! ?6 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。# c! w& g0 O8 `* ^1 `. d' l
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