本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5 b: N9 L" e1 E U* D" d2 L
( f! {3 K- M8 O" Y8 Y7 mtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
7 I, }+ t; Z2 r公仔箱論壇AMAZING!
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Even after you see it, it is still hard to believe!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。0 K/ [5 x' }2 M" u1 `
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.77:88981 a) A. @# `5 b5 _8 N, G8 a8 n
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb# p4 i6 W5 t) n: |, {4 q
It is located in the city of Magdeburg, near Berlin.2 F8 `; g3 @+ G. f* b8 h
( z- a5 q6 `, x" _- ^5.39.217.77:8898The photo was taken on the day of inauguration.
% E' Q" t3 [( bTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists." v# `9 v q8 O
) F: u& c2 B- u) B) Ttvb now,tvbnow,bttvbQuestion:& N& j) m, R& w3 m% F
; T8 H% X4 I% T4 O- ?! L8 O! `公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
$ j% f/ N- u/ l& P- R) y$ QTVBNOW 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。Or just the weight of the water?
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Answer: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。. q/ d; L: x- J6 S) p6 G
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It only needs to be designed to withstand the weight of the water!
$ m1 x& q/ H9 Y0 J$ ]6 T) D( a公仔箱論壇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* d. E3 Z0 |8 o- J( q
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) V8 t9 W" }) _, e. M! @( h公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
$ y. j: i" }- f- FThe 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.
1 o+ k! S* l1 n# A) c4 f5.39.217.77:8898The 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. tvb now,tvbnow,bttvb Y+ I+ b4 x& H
) e* F* V# [# R9 ^0 j) ~& ?2 p公仔箱論壇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.
$ p" c$ G' V2 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。tvb now,tvbnow,bttvb4 J% ]! z5 N# E: @3 i$ e- K0 A) v
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。# e ?* K5 M7 o( O9 ]
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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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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。 S, g* {* C K; s( R
發表於 2011-10-15 09:35 PM
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