本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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, Z; J6 t; }- 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。If you are not a Physics person, read on and learn a fact of physics.
0 u7 A0 c+ T& s/ F: r R公仔箱論壇AMAZING!
4 `. T" W8 \" H& t9 b5 dTVBNOW 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。$ Y) ~7 I! u% H2 ~* Y
Even after you see it, it is still hard to believe!( W5 `( v: u+ H+ j
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3 Z! Y8 U2 n" X* ^1 r; L6 BMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
$ H; h% u/ J1 h, i; g/ n" S公仔箱論壇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, [% D8 Y# L, H$ `
It is located in the city of Magdeburg, near Berlin.1 d! H3 }( c! F
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The photo was taken on the day of inauguration.
! G- N1 _9 @2 W7 Otvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇& B& p3 h; g3 d/ m, z3 A6 G
& n; S% a: P; |& ~0 ~" a+ Ktvb now,tvbnow,bttvbQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
: ^2 P: Z. J% b% Z2 ~公仔箱論壇Or just the weight of the water?
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- Y2 R& L A+ q4 X( w公仔箱論壇Answer:
2 i; j6 {* L4 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。
4 Y; y5 L. C( R8 s# Z) ?' l9 v; ~% @tvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! k+ s# o% C% e" @/ O
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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, K# G+ X+ ^! O; M5 ?The Incredible Magdeburg Water Bridge in Germany
. Y c! h+ }0 B% `: dThe 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.
4 q" M3 Z& c2 Q+ p2 pThe 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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`4 y% Q/ A* B# _4 \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. 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 w" c2 R7 ]0 a2 d/ f0 s
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% S" k- m: I4 Z- o, w3 [5.39.217.77:8898/ O8 T8 e6 T$ _3 ]- Q% D
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2 H7 ?7 T9 v; }4 h5 s& [" 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。+ y. V& O w, x7 Y' i. E' H3 x
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。$ m' n0 v9 m: \( b& G
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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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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。+ w& ]% k% T" N& J% i
發表於 2011-10-15 09:35 PM
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