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,bttvb t, W# C. j/ j- z( a3 F% N
: {: X: S2 M. {If you are not a Physics person, read on and learn a fact of physics. 7 q8 T( e9 F/ S9 \7 m) P m' b' {www3.tvboxnow.comAMAZING! tvb now,tvbnow,bttvb. b' n9 ?& K) d) y) r3 \ ' z* {/ z, C- ~' eEven after you see it, it is still hard to believe!公仔箱論壇# ~& `( q$ }. L0 K/ I [attach]1486499[/attach]; f% |$ h! S" y6 R2 u
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! * o/ Y/ e8 s) r2 H. [: Z* y8 e9 ltvb now,tvbnow,bttvbThis 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。: t1 J) X, g+ ?, q5 y
It is located in the city of Magdeburg, near Berlin. 9 j0 a, W+ U# N2 O6 X7 M) cwww3.tvboxnow.com 6 f0 e) G$ x; Z$ c) r. [1 |) cThe photo was taken on the day of inauguration.www3.tvboxnow.com; d, d( R3 ^ r( ]3 Q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。) x: g; i. }# b3 K# `
9 \+ \' r" `# m b* u: o& V# PDid that bridge have to be designed to withstand the additional weight of ship and barge traffic, $ i0 y$ r+ |( v公仔箱論壇Or just the weight of the water? + V1 C6 L/ A3 l6 F0 n
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Answer: # ]+ u/ K: ^' q* Y& Hwww3.tvboxnow.com % I; `" M' ]: NIt only needs to be designed to withstand the weight of the water! www3.tvboxnow.com* q; k0 e: P: W: R
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- W0 r# h0 P* o- d/ F# B/ t. S9 P 公仔箱論壇1 f" F+ \) M1 j* H5 C5 j4 X
: l9 f( m8 L7 O( k The Incredible Magdeburg Water Bridge in Germanywww3.tvboxnow.com0 y) p/ W) {2 F# E/ H* R' ?9 c$ f
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. ) N' h% R1 j" l# x5 l2 y- `tvb now,tvbnow,bttvbThe 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. , ?% w' c4 M$ o0 y& ^tvb now,tvbnow,bttvb公仔箱論壇5 k7 G* B$ X6 {8 [8 ^
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 `3 {7 C X1 z5 m
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