本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 - ?; e( ]* i$ l- j y# |! j
0 K A7 j3 w* H( @9 X: `tvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
9 f# J; v6 o( PTVBNOW 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。AMAZING! + r; X0 y; T" n ~! ]! ~
; D8 q/ i# ]8 V0 O" q$ { C0 ]' ]/ RTVBNOW 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。Even after you see it, it is still hard to believe!
9 d4 O9 Z+ W$ X* A3 T; HTVBNOW 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。
0 @* I1 b% g% R) P/ q5.39.217.76公仔箱論壇& _( _$ r% v# M+ Q: [0 j
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! $ m$ ?; b l7 \* p5 @& z1 Z
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& z* O/ E: n! S8 W+ m) j* d
It is located in the city of Magdeburg, near Berlin.
: {$ b+ s9 p" w! c$ x1 \& hTVBNOW 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。
; e* ?% }5 A. r公仔箱論壇The photo was taken on the day of inauguration.8 f4 x7 u$ \9 [3 A2 m
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.* \8 n1 L$ `1 ?: w. C* o
7 D1 l5 v, M" V* h7 ?8 o! DTVBNOW 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。Question:: |7 h! a# D, X+ f7 F+ n
8 C+ o: g) \2 s4 v2 X# z4 k公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,6 L+ ?; j5 A! f' ^9 x. d
Or just the weight of the water? 公仔箱論壇' W, ^! j- @( P3 k
5.39.217.76; `5 k2 m/ i# x6 N- v& r
Answer:% ?, p$ I/ c$ O& [6 v
/ @4 G4 _$ W& G0 F& f0 U. E5.39.217.76It only needs to be designed to withstand the weight of the water! 5.39.217.76! m3 i! O I) R# o
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.764 n: t" c' w7 Q4 u. Z2 h
; q- Q, O+ F$ O+ b% F
$ X5 z' Q. d R' E0 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。The Incredible Magdeburg Water Bridge in Germany
: J4 N. s: @; W/ p/ G htvb now,tvbnow,bttvbThe 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 |6 |; ?& z+ P; d/ ] C4 C公仔箱論壇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. 5.39.217.76, o( m! u* Y3 T E8 W
tvb now,tvbnow,bttvb3 S' u# D. r* Y, ?- p
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. 5.39.217.761 C9 p' l l! W
6 P2 T% x( ] s+ h; p
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。/ B2 g3 K2 i; w. y- t
tvb now,tvbnow,bttvb9 U+ E7 x) G, T8 q
& Q* o- z' V5 g7 ?% F) j5.39.217.76
& K3 ]) H. m% v; j* u4 F; x7 y( i! Z+ b
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 }3 {" G6 `9 G& F' {1 s$ V
$ |! {) E4 R4 Y I7 o8 b9 Mtvb now,tvbnow,bttvb3 H, c4 r$ T6 V6 L- \% C& b
|
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
+ |* o* u' p1 U4 \9 p+ m* c
發表於 2011-10-15 09:35 PM
|