本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 # J: e3 ` |; D5 c
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If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇% \# i1 F; W( i+ W
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8 B( G( U! E% x- ]8 p* {5.39.217.77:8898Even after you see it, it is still hard to believe!
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$ h# D: X1 P8 O t2 H: b* Q8 NMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
) l$ L6 a) U- i5 fThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。- q b" b- L- K
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
2 s( M$ y& m; L; G公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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; P/ K3 S' d, z8 p6 S0 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。3 ]. y2 F" ^% D4 x1 `
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇. D( }1 u) _* r) y
Or just the weight of the water? tvb now,tvbnow,bttvb3 d* E8 R9 N) N; v, Z
) \, [, V g$ w x/ m- }' RAnswer:5.39.217.77:8898# e) K( ]' w8 _0 n0 x( |, Z: B5 Y
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It only needs to be designed to withstand the weight of the water!
4 J: M' D0 R! E" YWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded公仔箱論壇1 A) N& Z+ e3 F. b6 A" o" z
& R1 |/ g0 _5 S$ C' W. ^9 j( i0 A# cTVBNOW 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* S8 H0 t5 j7 c, W5.39.217.77:8898The Incredible Magdeburg Water Bridge in Germany
' o: q$ E# A( W# G- ?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 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." A8 G7 w/ f) n1 [* A
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. 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。 w7 D- i5 z9 C
; K2 k) K( ?- | Q& L* 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。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. / \' X* B% D5 N& z3 g% q" U, @
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6 |& T7 Q2 p3 a9 F; y. v' 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。
" `* A% Y1 R& S7 D+ [3 J+ f5 F( ITVBNOW 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。 F6 {, I7 D; P# i3 `5 ]% b1 x4 u
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, D3 O3 w9 z- B6 @* Vtvb now,tvbnow,bttvb1 n/ f& M! d" y3 U z' e
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