本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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8 r7 S5 \0 A& B, n. }tvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb! v! F8 _( \; z2 Y( w7 Z" @+ E
AMAZING!
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$ p2 t2 L0 q: O! M0 tTVBNOW 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。Even after you see it, it is still hard to believe!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。, r$ O, R1 U- u) i3 r
( f- u7 L& p& J: f+ X& t. ~/ gTVBNOW 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 w2 F o7 O. ~. u D6 i; d3 [7 wTVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇; P1 J% |! ~& g5 T
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
& Q& _+ Y6 |/ Y, {6 |+ HIt is located in the city of Magdeburg, near Berlin.公仔箱論壇# ?$ X$ a# A5 P( S5 {
& c! o4 X3 w* G/ k- ]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。The photo was taken on the day of inauguration.0 l$ g' M+ g8 A6 p: l5 J- b% k
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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# g. \0 H) V% Y) e$ RQuestion:
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1 `5 K# t2 M- c( Y2 NDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb; H. j1 G9 `/ q0 X0 w
Or just the weight of the water?
9 }. c! r& o2 a5 s公仔箱論壇
0 s% f& p: V* @$ n- r7 N! f公仔箱論壇Answer:公仔箱論壇5 n7 F1 Q; [1 G' |: J) j, A
4 z0 q( P- W1 V' x: c; M. IIt only needs to be designed to withstand the weight of the water!
" `: M) t5 I/ G% i+ n1 R" \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。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, X1 I5 i: f2 F
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z& R$ l1 c* [9 N. L6 Q5.39.217.76The Incredible Magdeburg Water Bridge in Germany
, c) Q$ J9 O7 ]. L4 i4 eThe 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.
; c" ?5 S7 c( f* LThe 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. 公仔箱論壇9 C/ w8 B7 v$ ?. C) V& [3 V
5 B* O0 l$ R( E公仔箱論壇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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! Z9 S) k8 I8 O1 k: T公仔箱論壇5.39.217.763 {$ d8 t0 S+ r* K( j4 z6 ]
3 p3 b |4 r3 F6 _公仔箱論壇tvb now,tvbnow,bttvb6 @$ A/ ~& c& X2 N7 g* P' {
3 j1 @$ b; i% s! ~公仔箱論壇: N5 b8 D- j. B
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 i. ]- H3 Z o0 T& f2 P
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