本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
7 H. S4 S" N, x% R$ U) T5.39.217.76
7 p6 [" O1 ?, o5 I8 b. K公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
7 F8 L' ?4 \( P) w) ?* Q$ |9 S/ WAMAZING! ; }4 C& Y/ J: s9 C' k
公仔箱論壇# y. A1 x& \, P; E; N" @. P
Even after you see it, it is still hard to believe!5.39.217.76+ F* L: }7 v/ u6 q; {; H' |6 A5 S
" Y- v' y" r/ z; e5.39.217.76TVBNOW 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。) l5 f$ _* i4 f: @' |% o, {1 D
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
2 a$ G+ q+ }( a* aTVBNOW 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.
. d& b- v* }+ M/ i: Z. e* y+ ? iIt is located in the city of Magdeburg, near Berlin.# a' |6 p6 U5 A1 k/ J0 @% D* y' A
* p5 l2 J1 n: F* ~) 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。The photo was taken on the day of inauguration.
1 l7 ]' w: k4 ~! 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇- @# a, i9 l3 n/ [6 C/ \/ S' 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。- p- X i. s F6 Z; {
Question: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。 K( m- r# M! D5 S- ^
4 G' i k. ?1 [+ j$ e; A6 D7 Z
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
, P6 j8 _' G8 t5 Otvb now,tvbnow,bttvbOr just the weight of the water?
4 J. f0 Z& u f- Q9 z; h& {4 @tvb now,tvbnow,bttvb' t2 t4 v5 Y- i7 Z0 U: G2 G
Answer:
+ p f2 F2 d- j5 Q! t3 p* F0 ?6 R: v* M
It only needs to be designed to withstand the weight of the water! 5.39.217.76- D, y$ n7 E9 G+ H. O6 c
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公仔箱論壇3 _# x' w x( j8 a; K) j3 q( X
# b- y i2 f- B1 g. R
; c8 @" e' P. d# T x# [5.39.217.76The Incredible Magdeburg Water Bridge in Germany
6 ?+ {4 _5 Q: l' P. M! KThe 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.7 I( a" n# [$ B0 k! c
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.
9 K* Q- x5 ?' }! kTVBNOW 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。
. `7 p; `: Z; T; `) x9 B; f+ o* O; b; tConstruction 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. : `3 {" C' G1 e+ r" U1 V& M
tvb now,tvbnow,bttvb1 \- N3 n) e. [% Y& K
4 V5 ?( C$ I4 y* K w: Qtvb now,tvbnow,bttvbTVBNOW 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。- d: ?3 M) d& |$ s- D; s& L/ I
- I1 z( l6 y. B$ r0 |: ETVBNOW 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。
+ Y! l- \$ G5 b! U7 B6 m& T6 Q+ m8 x5.39.217.76* G2 Z5 V+ r' v7 g+ f
' Y( @& y! N" @0 I2 C, k7 p$ X
1 ^' [; q# d! W% A7 m
' u) p1 c2 W& U+ C |
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
|