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 8 \$ `' u# Y! B' Y u1 F& tTVBNOW 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' F: t- ~# G# b% V) I" `% ]
If you are not a Physics person, read on and learn a fact of physics. * i6 O9 f8 c. E- x0 D. ^8 vAMAZING! 公仔箱論壇: B% ^8 K7 f; h7 @6 M5 X6 S- ]2 } 6 b; D$ p! {. J+ m5 mEven after you see it, it is still hard to believe!( l9 @8 y% R7 f2 Q3 ]! c [attach]1486499[/attach]5.39.217.77:8898/ o% a+ s; f* \7 W' F3 v; Q. w+ I& A
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。; q; h& u. R( k
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 2 U, ]! b( {1 N L, X; N3 j7 e
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$ d$ T x2 c) N. j L4 K/ N
It is located in the city of Magdeburg, near Berlin. ' y- T, |7 U* Y2 C% Z: X( S7 |( p公仔箱論壇5.39.217.77:8898- x2 i- f; V$ z3 {& z5 V
The photo was taken on the day of inauguration. 1 z6 [; ]4 V! `0 Z: Y! W& wTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.8 N9 x; `* k7 ]. N8 O
5.39.217.77:88983 R, V8 s( O' d3 M+ H
Question: 9 {- D Q% ?3 T$ ~; y公仔箱論壇 : O+ V: C6 f# p! l2 k1 HDid that bridge have to be designed to withstand the additional weight of ship and barge traffic, $ H7 c, O1 ^2 H' @Or just the weight of the water? , e( ]7 }) y5 U
tvb now,tvbnow,bttvb; u% a0 v2 g) L, K. V
Answer:公仔箱論壇4 p/ K1 p: l4 `0 ^1 l3 l; A8 q9 }/ ]
3 N, j y8 k- A8 x
It only needs to be designed to withstand the weight of the water! $ Y- m/ ^% d* D4 g1 Utvb now,tvbnow,bttvbWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.77:8898* N) K& M. J. b5 s' C 5.39.217.77:8898* k1 a3 [& A4 P" J
* K5 A0 T4 B7 e0 N0 M4 R2 L5 e$ BThe Incredible Magdeburg Water Bridge in Germany+ Q) p% H/ k s, Z, ]3 M
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.5.39.217.77:88986 f! m1 V0 r2 c4 v: J( B
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. + z0 e+ g4 i4 D( p" Q+ k* P' M& h$ u + v- C& E# }9 l& n4 f+ _tvb now,tvbnow,bttvbConstruction 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. 2 B3 _: |0 g: ]: P# ]2 f( r" x
9 n8 d6 {3 \3 J5 s. w* ^5 H9 d- v
tvb now,tvbnow,bttvb1 C" L9 V7 Z4 C4 \2 N9 B