標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁] 作者: lilitan008 時間: 2011-10-2 10:09 PM 標題: EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb6 Q! g+ Z( }9 J! @" D1 _( G
公仔箱論壇. R( M- q# L( C6 M9 \3 M
If you are not a Physics person, read on and learn a fact of physics. 5.39.217.77:8898; V" ~; U2 h7 p9 I2 Q: k5 f2 J
AMAZING! tvb now,tvbnow,bttvb. o8 G6 j% |6 L # o$ H$ S6 `1 u( _4 C5.39.217.77:8898Even after you see it, it is still hard to believe! " O, z* \5 M2 v2 h9 F1 r5.39.217.77:8898[attach]1486499[/attach] ! u9 U; i/ V3 [: A, Z公仔箱論壇 - k+ [. D1 n& c- @Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! - \7 E3 X# n+ s8 B9 L; ~5.39.217.77:8898This 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,bttvb0 b& J, v/ m+ b2 @3 T% }. g
It is located in the city of Magdeburg, near Berlin.9 s3 @. M+ t! o" ^! ]
5 q g8 O d0 m. q
The photo was taken on the day of inauguration. * i% _/ o8 H; {: N$ K公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists. 2 r( b+ k: T0 I& C! l8 m. m公仔箱論壇 8 b0 U; q! ^3 `$ f6 t1 R- R5 WQuestion: # r+ i( J1 t5 H$ X5.39.217.77:8898tvb now,tvbnow,bttvb3 R, t& Q( M% ?
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb0 Z, f# A% j# x7 ]# v9 {6 d
Or just the weight of the water? 4 i& y* C; j* W W% _7 u& Btvb now,tvbnow,bttvb 7 S Q9 }+ I: T, h9 XAnswer: [2 o4 E+ f1 e5 s$ a& q5.39.217.77:8898 1 |- a- e& p; _* \4 y5.39.217.77:8898It only needs to be designed to withstand the weight of the water! 5.39.217.77:88985 s+ V# u& {) S( B
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公仔箱論壇( Q5 O0 ^. z' M H& x. O4 U+ W 5.39.217.77:8898; m) X: Y6 u+ U0 n0 a) C( C( T% b
" T1 v+ }2 G$ n; }5.39.217.77:8898The Incredible Magdeburg Water Bridge in Germany公仔箱論壇# M2 q J8 a& p9 m \( |4 K9 S8 C
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. " M7 H8 @6 p- j2 Y5.39.217.77:8898The 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. 4 A {+ Y2 q( I. `公仔箱論壇3 q8 s {, N$ U1 R: ]
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. tvb now,tvbnow,bttvb9 L- t! C* H& H& Z0 S
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。) T! |+ C5 p7 L6 v
% s+ \4 `: l y2 |5 G$ D7 h [attach]1486500[/attach]5.39.217.77:8898) {" @; K& @3 H+ d. Y) j* n) | [attach]1486501[/attach] ; o/ `8 { B( Z+ [* JTVBNOW 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。[attach]1486502[/attach]4 P k" z2 V/ J [attach]1486503[/attach]! t `! k8 M; N0 M [attach]1486504[/attach]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。; `4 p& v$ S2 r! g( k; @ [attach]1486505[/attach]2 @$ }" @1 o7 a
+ M' g% I' L' v, B 作者: busyfun 時間: 2011-10-4 11:33 AM
