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 , Y/ _& D. {5 L& M! H
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。3 t8 h2 ~0 k% j$ I
If you are not a Physics person, read on and learn a fact of physics. www3.tvboxnow.com' q, F" V0 ^ S" y, r
AMAZING! $ g# v) E; Z! ]# a' m; C0 ^; l 3 b' u) u+ k& v5 q' q$ N* K& owww3.tvboxnow.comEven after you see it, it is still hard to believe!www3.tvboxnow.com2 d2 e- O8 v8 l- l" Y [attach]1486499[/attach]tvb now,tvbnow,bttvb" M' j+ i1 j7 y3 z+ t
; Q8 {5 n5 o$ Dwww3.tvboxnow.comMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! % }# ^9 c8 [1 ]( ~+ STVBNOW 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. * R3 c/ ^: D' i4 r5 x9 {
It is located in the city of Magdeburg, near Berlin. % n2 i# r) T* J& o" Ftvb now,tvbnow,bttvb 7 ^" `, G. ]6 P0 q! w7 @; ZThe photo was taken on the day of inauguration.www3.tvboxnow.com* i' u8 d g2 \
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.www3.tvboxnow.com" G" `) e% E' w6 c! r" P+ T
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇: Y B. E: D& Z" u2 f y. I+ E
Or just the weight of the water? : [# j2 b" ~( ^1 o# W* \www3.tvboxnow.com 3 I) y& y$ D& Y5 f3 ]Answer: v1 C8 f# x/ x5 a0 s, z: P: y! ^6 Q, d7 n6 B" u1 ?
It only needs to be designed to withstand the weight of the water! & S/ S' a# C ^6 S- y0 HWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded$ }7 r5 n) a" ?$ D; k2 C V; U z& O" l) [9 @2 {, x& _
www3.tvboxnow.com+ W7 R, V. U7 v4 _" P! U The Incredible Magdeburg Water Bridge in Germany 5 G# M9 Q% v) f$ J! b3 F! BThe 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. 1 `: R; X J- p+ A$ U4 ^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. + m$ [' m6 J: L( F& e% Dtvb now,tvbnow,bttvb" R8 X) l' r' U `! A
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. 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。6 k# C: s6 C+ L, a1 J
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