本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 / o M) S$ y, ?4 o6 H) D1 f0 A
5.39.217.76/ ~# h+ z8 l- Z* d: B$ l4 p _) b
If you are not a Physics person, read on and learn a fact of physics. & Q, P" {- m. `5 N* q5 q& X
AMAZING! 5.39.217.76' k1 o! z: X8 y1 M2 {0 Z! y: u
6 K. U1 V* a" `7 ?6 U5 U( U% ^/ ptvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
5 o2 n+ v/ P0 x, m
! s4 M; h' J" N. F( NTVBNOW 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。5.39.217.76) l0 s# ?! a( Y, T% F
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ) t+ X& g! T+ c5 Y; @ w+ Z) O1 K
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
, r7 I3 W, L+ W# X( p, n; ?6 e! bIt is located in the city of Magdeburg, near Berlin.
, L, X3 C) A4 ktvb now,tvbnow,bttvb6 c' K( N1 `& N, \( n# h. w# [
The photo was taken on the day of inauguration.5 `; L+ `7 S$ \& I) C. @7 q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
3 f) R y, I/ _8 q5 D9 h' q% |( X5.39.217.76+ F$ T! L' X% B. Z) a$ @ C! p
Question:0 n- `$ ~3 o+ g, d: `# A8 `
tvb now,tvbnow,bttvb* @$ y, K# Q' H. ~( g: ]: ]% h
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb# G. d6 r* h1 j2 u9 t# O/ l
Or just the weight of the water?
" ?8 o! e( X, p, x8 }# ]0 S5 w5.39.217.76
7 R$ E6 |" `. I, t' z) C2 Stvb now,tvbnow,bttvbAnswer:4 \ ?' ~$ G* J) L- D) @% _, f
tvb now,tvbnow,bttvb q; j2 Z$ x! j/ K7 ]* b( R
It only needs to be designed to withstand the weight of the water!
9 S: a4 z6 ^& J$ R9 W4 rWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
6 N3 ^7 _' m4 W8 ?* j公仔箱論壇
4 h$ B; C# A6 }. N# I: y3 S5.39.217.76- H" M, H- @8 L E0 y/ ?' g `
The Incredible Magdeburg Water Bridge in Germany
, R7 m; ?- ~ A6 ~. i+ I7 G0 {4 e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.
- p; Q6 G& K) N) {5 F- Utvb 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.
5 S/ b6 I1 |' \9 K1 w- z" qtvb now,tvbnow,bttvbtvb now,tvbnow,bttvb0 C9 U% h9 T0 ]# F
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.
8 x1 J1 S! g2 G- r
* ?7 O' R" F* h) ^4 W
' ]& Q5 O6 t7 \; 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。tvb now,tvbnow,bttvb; U- g! {9 u7 n( T6 O9 m0 A
公仔箱論壇. Y! {2 O0 M" I" t
9 L8 U" n6 ~, l/ Y! c6 t+ V8 ]) \3 k
tvb now,tvbnow,bttvb+ `& g# B3 d& Z% s' _: D
5 B3 v9 i2 }7 V& U: R5 f
2 H8 ~+ t5 I4 ~0 W# D# V* s3 x |
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
發表於 2011-10-15 09:35 PM
|