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 # n3 E7 }9 r( a. ^1 Z3 P4 A
# x' z9 M. n! Z5 t' ^2 \( j* |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。If you are not a Physics person, read on and learn a fact of physics. ! N0 [+ L. h0 `# rtvb now,tvbnow,bttvbAMAZING! / ^5 J/ i1 D# E5 X ) v( Z: a+ r `" G, C公仔箱論壇Even after you see it, it is still hard to believe! + B+ V7 s6 q. w1 a8 U( ?公仔箱論壇[attach]1486499[/attach] & j2 ]: z) {; _: H4 `; k6 d公仔箱論壇tvb now,tvbnow,bttvb" m" `8 F* |9 v8 T1 i0 B
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。5 j# A' g, _3 D+ D3 r4 U! P
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* k" i- F+ b; h( I% O
It is located in the city of Magdeburg, near Berlin. : f- w0 J* V0 J1 [5.39.217.77:8898TVBNOW 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。" y% y. ?9 i. ]0 }# D. N
The photo was taken on the day of inauguration.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。8 {. y8 w! O% k3 H4 k
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.; e. s6 `& }, m3 T+ Y: _0 [' `
2 h% J5 u/ I+ B' ~* U; h
Question: $ V" t; j. c0 o# F4 aTVBNOW 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。 ; Z9 ?5 @+ \3 y4 g' H$ i4 G3 UDid that bridge have to be designed to withstand the additional weight of ship and barge traffic, ; y2 y& ^: F+ s+ l% G: tOr just the weight of the water? 2 F1 A: q7 ?* x8 M9 I6 W
7 L/ w4 {; e& c, [# d7 j( D3 iAnswer: - `7 N: f% Y2 \% E5.39.217.77:8898% t/ U1 |& a/ R' j3 b
It only needs to be designed to withstand the weight of the water! 5.39.217.77:8898% _' a7 J% P/ L" g- C
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 2 G! v" `* b* `9 A " ]. ~' F/ t, z! w8 t. ?$ U4 C# W公仔箱論壇 ' r/ `* F& Y, L ^0 R, ~+ R5.39.217.77:8898The Incredible Magdeburg Water Bridge in Germany 3 C0 v l9 T$ \3 _公仔箱論壇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.tvb now,tvbnow,bttvb' @1 ~9 ^4 y0 G- }7 _$ y1 c. l. ]
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. ! y* b W& T) o; u! h0 L& | & l& I1 l7 u0 x% q( J' a5 m( ]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. 公仔箱論壇" G% W* ?) k1 l. f" n, ~, h
