本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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2 s# y* A" V' X j5.39.217.76If you are not a Physics person, read on and learn a fact of physics. # W7 {7 n3 j" u8 l, q6 ]2 y
AMAZING! : n$ V0 u, x% y/ U
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Even after you see it, it is still hard to believe!5.39.217.764 ]( F! C: M) R+ j$ C
" C/ a6 u4 I% n; p5.39.217.76TVBNOW 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。* `. O, s& _! D
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
9 C, ?8 h+ m2 X! c& 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
% C' F, s) P3 N/ _6 M. f% B b5.39.217.76It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
$ J% S2 S3 _6 s. ftvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
' [6 {1 X! T( T公仔箱論壇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。; Q4 P# E- R" e0 c( b- x! H
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,: u4 x2 C5 t5 ^' X3 Z
Or just the weight of the water?
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" h3 T2 _' m1 wAnswer:
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It only needs to be designed to withstand the weight of the water!
( `8 n% ]; f) f$ g' T3 A5.39.217.76Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded, ^% O {+ |* r. r! K' f
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The Incredible Magdeburg Water Bridge in Germany
S7 C( a# D+ h$ |- c! X8 N公仔箱論壇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.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。5 v0 _. {& P; K8 C" M9 p- H' Y" K
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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$ b+ I* |+ ]7 ^& P5 g' Ttvb 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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* n7 f8 r& _8 u1 T7 I7 ETVBNOW 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。
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S$ }. {- Z+ S3 f( I8 p- ?5 @: M/ o公仔箱論壇
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$ f L2 ]/ }& {( ]* w' E$ `* |& D公仔箱論壇5.39.217.76; g( ]' t* I- M" }- Y. u
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