本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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! P0 z( k1 i" G) T5 LIf you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb# e+ T0 p+ w; \% N" h4 q9 A: f; ` I
AMAZING! 公仔箱論壇( }/ E1 z+ n3 j3 t/ V
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Even after you see it, it is still hard to believe!
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& _- s0 B3 l9 }" o. aMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
$ W! O$ U7 @9 [This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
" t/ o+ b0 i) z8 x3 |- X/ e8 X5.39.217.77It is located in the city of Magdeburg, near Berlin.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。% ]% F3 X* U9 I
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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。0 o9 [4 @' H4 ?" [: T# K2 M
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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+ F6 J# A! R9 Q公仔箱論壇Question:
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- K$ K, G9 ?) E4 k6 W3 B5.39.217.77Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! k+ P, R$ D; ^( R% } M- Y( hOr just the weight of the water?
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( \! O+ l9 S9 d1 m# _Answer:
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It only needs to be designed to withstand the weight of the water! 5.39.217.778 i5 h1 l/ P2 w
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
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4 V [) N" m B6 B+ W# I" iThe Incredible Magdeburg Water Bridge in Germany
4 f. G6 j: ]7 B* L/ S" z+ l+ Q) m. sTVBNOW 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 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.
( ?8 i- { C- \' {) a0 i8 p0 oThe 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. 公仔箱論壇; L/ m; s+ z0 Z! j4 e
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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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0 d- L& x. P5 D( vTVBNOW 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 \5 h$ o+ t3 d5 O; j& P' @) T$ m5.39.217.77
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( v% [- y3 Q1 y& U5 J- i/ h1 |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。公仔箱論壇; ~. }7 o E& G4 `
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