本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇7 b T3 [( v2 P
" H) u. L0 G, n. D4 P. s( q: k公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
6 Y! G% ?7 O. L' ~- E3 r2 r公仔箱論壇AMAZING!
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% W6 L- [! L: c0 n5 F. f2 m: P" Kos.tvboxnow.comEven after you see it, it is still hard to believe!
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# a; O! ~4 g6 J; n( X! ^0 z6 ]9 A3 \Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 8 y0 p w3 k% U0 C5 `
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( d, y- T4 i% ?( D. @5 u( ETVBNOW 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。It is located in the city of Magdeburg, near Berlin.+ G: a( P, D) T
# O/ s& U" u3 c# ?公仔箱論壇The photo was taken on the day of inauguration.; J; {8 v+ V) d0 ?
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇0 O% Y! X& x* @- m" I; Y
% O; I- y& J9 M' [) [Question:& ^! t9 G% Y+ C2 p8 x7 E
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb7 b2 |, w, C9 x3 O" r
Or just the weight of the water? tvb now,tvbnow,bttvb# j. U6 c1 x# r h4 O( g# B$ h: j1 M7 F$ U
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Answer:
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; |" h' }7 G7 T e# w) k公仔箱論壇It only needs to be designed to withstand 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。! i! g3 ~$ z j5 i6 b! v
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+ B) N- K Y( H' v
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The Incredible Magdeburg Water Bridge in Germany
9 l' Y1 l Q/ y4 O1 F, V T公仔箱論壇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.5 }4 }& u& n& ~* Y( [
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.
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# O( n3 H# \) j' 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。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。% V ?$ a8 g( [- |1 A5 {
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