本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇7 \' F3 [4 V) |8 |
7 n0 f7 w. w( K3 r' `5.39.217.77If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb2 Z6 Y. S7 f1 m. X8 R
AMAZING! tvb now,tvbnow,bttvb' J2 d+ E; r6 S
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Even after you see it, it is still hard to believe!4 o7 E/ m' J8 D" P/ b- n5 z# s, L
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9 F" }+ z! b$ w& P$ a5 otvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
( w0 L9 b n$ }+ s5 C6 ltvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 9 N" _% U$ b j% K. [8 ~/ o4 p
It is located in the city of Magdeburg, near Berlin.5 f, f! I2 `5 }/ V% P* |6 F" K, r
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The photo was taken on the day of inauguration.5.39.217.77. b! i/ I8 x2 {, q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.772 _6 h0 q v- X- z$ j5 R$ i! E
! W( }0 K* S; z, F/ Gtvb now,tvbnow,bttvbQuestion:2 P" t' \( p; x$ [" Y+ b0 n
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.77- |/ N5 @ n7 G
Or just the weight of the water? 5.39.217.77: E3 D6 G: E* ^# b
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Answer:
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/ g1 k# h7 s; l- @+ a1 k9 K8 ?' N! y! b2 q5.39.217.77It only needs to be designed to withstand the weight of the water! - k: _8 T# l; r
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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 W9 K5 q, a5 b% S/ r
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; E0 {. V# x/ e公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
: y6 y- z" k8 a* U8 ]! j0 B2 G) SThe 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.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。/ D- ~2 v& c) J$ C
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. tvb now,tvbnow,bttvb6 Y6 |. F5 |( {! _- H, `& M
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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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# g' e1 M1 |; \ K5.39.217.77TVBNOW 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 b3 @. t" k; F- K
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發表於 2011-10-4 11:33 AM
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