本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 8 I) ~/ C& _& X6 U+ \& n
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If you are not a Physics person, read on and learn a fact of physics.
6 u4 H) r- z8 z5 _! K8 D7 ]' I# I, stvb now,tvbnow,bttvbAMAZING! 5.39.217.76& A. b9 N1 j' e# J. }: `! d) `
% F" S5 D1 V: fTVBNOW 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。Even after you see it, it is still hard to believe!3 G2 A+ l x9 g: ~6 t
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4 V- M1 w% C8 @) ^" }) T4 ~- @公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
$ M6 |- E1 |; M- y/ e( |, {' stvb 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.
/ `. e3 c$ Y/ i3 ^公仔箱論壇It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb `' j4 N! N2 F H/ d: K1 R
0 L. t. V' _" I* Y$ k: Jtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
+ j' n. m' u8 p5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:5.39.217.76: t9 R% _; l' q; l9 v* }+ t
- o2 K/ D4 h! V' \5 w5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! k) y( q, B( w0 t% ?9 Q公仔箱論壇Or just the weight of the water?
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, L5 C; d* ~( I2 W& e4 D9 mAnswer:
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) M, `0 b8 H4 H) e5 O: E5.39.217.76It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb0 o, e9 n% n) `0 }
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& H& }$ f! [! Z! |( c
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The Incredible Magdeburg Water Bridge in Germany7 Q0 N$ Z9 {/ ]; H" v: B7 e% a
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.
# n9 J. G z+ d9 l5.39.217.76The 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. 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。. t* z; P( l: M7 t' K- g ^% ^
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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. " A5 I+ G: {2 Z- M+ P( N
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. b) n. @* T# Q- ?5 F/ a1 @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。6 J0 I$ b+ a7 X) X6 T
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