本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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' i" ~/ _3 V2 J! ]2 Q. c9 U- W3 n公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
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; K) i; o! p* v; J6 c公仔箱論壇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 \) H7 N5 p$ T0 ~& A: H$ s. d
Even after you see it, it is still hard to believe!3 L \5 u- h& i- @
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9 V7 S0 K2 S' H4 C) ]公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。+ x% F% u& R& Z
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb, e0 e2 _! ]* g) y, y c
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.$ A+ g& @5 K/ s; @$ d5 b
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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$ u+ P9 F8 r, L$ z0 E3 c( k8 ]tvb now,tvbnow,bttvbQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb6 J+ f! `. w& }) H7 u4 H8 x
Or just the weight of the water? 公仔箱論壇. A( L* \& o, l4 p
# |, ~0 {. D& X8 J7 UAnswer:5.39.217.76- {5 R- Z& @6 k0 `) M K
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It only needs to be designed to withstand the weight of the water!
* g4 H; X6 N; s公仔箱論壇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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+ D9 I5 R1 @" @! p1 B2 nThe Incredible Magdeburg Water Bridge in Germany
$ `9 D. q% W' e UTVBNOW 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.7 Z' k: N# j: I/ {5 O0 }9 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. " r* H6 H' a( ~
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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. 5.39.217.76$ @+ ~7 N0 X; Y2 W$ s. e! N0 E+ \% o
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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。5 k* ?8 I" @; b. m- y( v$ I0 H
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公仔箱論壇5 ?7 y, V. E( c- R$ K: X* v' F
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。6 j4 `; x" D( U) o3 P1 Q! K# t
* t# v+ ?' b9 F; oTVBNOW 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。tvb now,tvbnow,bttvb/ r, `% X" x& a5 A7 q
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