本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb0 s- P7 C" n! f4 R( I5 F
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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!1 H/ M( J- h" y4 I
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。9 ^6 P/ ]1 [+ X/ J) X
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb! T, [% l& {# }+ k8 z0 P D) S- l. o
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇# E, i i' K1 X' L4 n( K
It is located in the city of Magdeburg, near Berlin.
! D0 `2 Z4 N& C 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。6 L" F( A% P! a
The photo was taken on the day of inauguration.公仔箱論壇 }9 k# A6 e4 v: t, k
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:公仔箱論壇5 ~, ?4 |* k; u l5 ^- X( ?* w
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.76* U6 ^* z% _% d0 h8 A
Or just the weight of the water?
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, h! R1 p2 y9 N3 O3 F) ^: P5.39.217.76Answer:9 h1 _: l3 O7 Y/ w( I* _
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 v. \; P5 ?4 V+ [5 H; [/ g$ b
It only needs to be designed to withstand the weight of the water!
' t5 F) q; [& U, e! xTVBNOW 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。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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The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。8 y1 ?1 F/ `9 ~ i) z$ L; J. C( L5 j
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.6 M3 q- W N) J. G# K5 a; r( Q
The 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.
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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. 5.39.217.762 X3 L3 L. x( Z
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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。9 d8 }- S( f i2 }1 X
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