本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 . c$ ~$ }7 L% q5 C1 t
# D, @: o5 n' _8 I8 Btvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics. 2 V: S, }( s8 c
AMAZING!
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Even after you see it, it is still hard to believe!2 I! W& W/ b/ \& b
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。4 j$ {6 i' c* m9 a% b
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。. D( { e, R8 ]; ^+ r: T
It is located in the city of Magdeburg, near Berlin.) M- g$ a8 K0 z2 o
; z! M% C- ^ q# hTVBNOW 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。The photo was taken on the day of inauguration.
( k) s% A# V5 I# UTVBNOW 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.; F* V5 ]2 Q0 @# L. y" l1 ~, `
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。3 M0 e7 f4 T$ a2 i) P c. f
Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
. O0 p6 z C+ ^% Q( T& Wtvb now,tvbnow,bttvbOr just the weight of the water? ; A. |5 b; G. e- |2 G& r! e
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Answer:5.39.217.760 A6 X Q* i; {5 s
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It only needs to be designed to withstand the weight of the water!
0 A C5 ]( E) v' o, l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公仔箱論壇9 _+ w5 v- i9 u6 W4 `
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3 k7 n! M9 T3 R* {* I, zThe Incredible Magdeburg Water Bridge in Germany
% Q- C9 O$ S$ a! o1 ~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.
5 @0 N$ J- y; bThe 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。6 R7 t( b5 G/ y; P: G/ T* x
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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.
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! W M' }; P0 gTVBNOW 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。5.39.217.761 g* S# t& {/ _; Q
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$ ~# @% C W3 U2 o3 z9 t0 T, E: _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。3 w' M8 l$ B9 [; z
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