本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.762 O* X# L. \9 ? ^7 m6 c
" ?/ ~0 i+ v/ {$ w4 r$ E5.39.217.76If you are not a Physics person, read on and learn a fact of physics.
8 E5 Z4 o1 D7 ?: g! h) f公仔箱論壇AMAZING! ( l! s0 c/ v/ y2 ^8 `; o9 g
1 ], \, e" m& a1 I! w! [0 WEven after you see it, it is still hard to believe!公仔箱論壇) `) ^$ R: L0 @) }# L- n
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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( j. A% q. ^, f1 `
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.764 P0 q, i0 {/ H% A* l J! P$ d
It is located in the city of Magdeburg, near Berlin.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; {9 k2 o& g' g* j$ @1 d
5 N/ A$ [! T1 c% KThe photo was taken on the day of inauguration.7 ^, X; S: m* G
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76) y' |* i7 K4 ~: d. I6 c& S! e- e' h
tvb now,tvbnow,bttvb, ~$ g3 Z: W( D' R5 `" t
Question:
! S( O; j: g* Q. }! Y# e! 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。
. b [) ]0 i$ J2 N/ i7 R. e公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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' y' E$ ]+ f( t. ~3 z
Or just the weight of the water? 5.39.217.76. n% o# s5 H, \1 m/ b
# x( k4 e) x. W3 G& w, J) FAnswer:5.39.217.76) G) I* U P. {
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It only needs to be designed to withstand the weight of the water!
5 T' }: g0 Y/ h2 ^' _ q5.39.217.76Why? 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。: n5 Y/ a: C# d4 Y
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7 g# g/ Y7 M$ ~ o1 wThe Incredible Magdeburg Water Bridge in Germany
. w4 n' b0 A0 F1 Z3 K# F; E6 ?tvb now,tvbnow,bttvbThe 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.公仔箱論壇6 I$ c: A8 [. {! H# t9 B3 d
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.
, t$ b& o5 V4 d- f5 D) T) S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。7 N; l U F* g' A, v. r; g; m: @. h1 @
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 Q# t, z6 k3 S2 J# y" PTVBNOW 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。公仔箱論壇; H7 A( u4 b; A8 c8 Y; _
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