本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.767 l2 \ `3 G. b& N& l9 X
3 i/ \1 N! u, a# a7 h) m: RIf you are not a Physics person, read on and learn a fact of physics. 8 O& ?4 l9 i9 k- ^' |
AMAZING! 公仔箱論壇. \7 w9 }0 G( H7 m; q
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Even after you see it, it is still hard to believe!
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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。! a4 ^5 Z8 \& ]% U! Y5 p7 k
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
3 s* r7 E) \4 N- P; DThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
" F7 O6 \9 E8 |) {' c; }* iIt is located in the city of Magdeburg, near Berlin.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。( T2 W5 _* l$ _8 y" O0 u' t
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The photo was taken on the day of inauguration.5.39.217.76" v* C5 B! [$ S
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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' g) h* F. s4 otvb now,tvbnow,bttvbQuestion:
0 ?. b" H% w$ u8 [5 `9 s5.39.217.76TVBNOW 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。, s$ z. [/ |8 ]! q/ p
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb5 |) m5 u8 @" y* T, M, f& F, s
Or just the weight of the water?
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+ l4 O* e a! K/ l. VAnswer:0 A! U' H. c- K. w0 `) I
; e2 A3 s6 M+ JTVBNOW 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。It only needs to be designed to withstand the weight of the water! * f+ j, B) K! ?3 T& y! Q9 E
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公仔箱論壇- Y# L! C# z9 T2 S
- n( x. T, y8 v7 J& ^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。
1 L( ?) V: a7 l) P公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
9 F! J: f! r3 g6 cThe 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,bttvb8 n8 j0 {! B# ^4 l* Y' C. t! f
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. 公仔箱論壇/ a! j5 ^. P+ b% p( B5 ?& B( o
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