本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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+ Z$ u$ W( r) k! r, ]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。If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb( D( w' W0 n$ w! M$ [; t8 ~3 I
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Even after you see it, it is still hard to believe!
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3 E( m8 l: Z" k) E' O0 qMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb" b, m8 h! `" n* q- v& C
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
% `% d" s. l, |) N+ E公仔箱論壇It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.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 Q$ @" T f8 V% c* h
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。7 H# _% F" x7 X6 D8 a- ^
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,3 _. T" U( O0 V+ Z" r
Or just the weight of the water? 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。: C' c$ N; b0 m6 s
5 l$ K6 R) P. H' Z5 b6 g6 z; z: Y7 n3 wtvb now,tvbnow,bttvbAnswer:+ R7 y |* S0 _& k0 f
. s3 X, J0 D, f# c5.39.217.77:8898It only needs to be designed to withstand the weight of the water!
7 K9 C7 s$ S# O& LWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
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8 ~1 i4 U+ w6 k( I3 d5.39.217.77:8898The Incredible Magdeburg Water Bridge in Germany
! u U# L- M1 d6 ?tvb now,tvbnow,bttvbThe 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.
. u* n" g5 |* l! p+ o/ GThe 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. 7 u1 U2 O; l. r+ N& d; d
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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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, {2 d* ` X, a& |: Y' A2 w/ B$ F! b5 I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。3 ]+ K9 T+ l, w% M% t' F
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9 \) V& S# K' I2 `: Y8 NTVBNOW 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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