本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ! g( w# `( h3 m8 S
+ D$ j* w' A. y, O9 h! @' u公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!9 D/ m9 [, T2 y3 V
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! ~& T/ l# e( E6 WMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! . u: u$ Y0 o( V- a' {4 _* x. Q
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。# N% \3 V4 e/ V# t6 v
It is located in the city of Magdeburg, near Berlin.
5 ?3 c( V# L7 b& 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。* a' R. d9 Q6 N
The photo was taken on the day of inauguration.5.39.217.77* G3 K% r# d$ E3 Q$ M: z
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb% s" J+ G. j, E, C6 @
# V3 y+ q- l) F# Itvb now,tvbnow,bttvbQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,* a* T! O5 _( f( R% C
Or just the weight of the water?
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+ k% ~( y7 w2 X1 `# X, o; Htvb now,tvbnow,bttvbAnswer:
. S5 P$ J$ x3 k6 z2 r: H1 F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。* U; \5 b7 x' p" d% F! l* {
It only needs to be designed to withstand the weight of the water!
+ S$ M! Y( B' Y/ s1 ?3 q- VWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.77% g2 u; ?4 E5 g0 n" I! u, @
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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。. ?+ U3 `0 ~6 f9 s' F- G" b! D! b
The Incredible Magdeburg Water Bridge in Germany) q; g/ w5 T( ], |- N
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.
. A" A% C+ e' v' p! y7 q) q' Z3 l7 N1 zThe 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. $ j C3 B. ?5 a
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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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- g1 M U% p6 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。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。. N3 C1 _ W. b/ T! e" ?4 h' V3 B
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# ^. ^8 {/ P! MTVBNOW 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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