本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
! Y2 c3 J3 s& w7 m/ c5.39.217.76
+ N2 k7 _% V. ?If you are not a Physics person, read on and learn a fact of physics.
/ n& F( I0 Y( m& D. Btvb now,tvbnow,bttvbAMAZING! * y. l: ?/ U$ n) Y3 x' G
' p: t: {6 g: K1 Z, a0 \
Even after you see it, it is still hard to believe!0 M6 h% H( U( C- q5 G: f% s
3 C4 B/ H# @! K* T( ?- ftvb now,tvbnow,bttvbtvb now,tvbnow,bttvb5 {& m6 X" J3 Z- y$ I
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 0 r/ K8 f3 h" J1 u8 F
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ! N* w; P \: l' F/ P6 h0 ^
It is located in the city of Magdeburg, near Berlin.
" a m# u3 }3 s6 G, Z5.39.217.762 M' f5 T2 Z5 P
The photo was taken on the day of inauguration.
, |; r+ W, q& O' D. ~5 o5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb' p% h) y7 E+ R" O. h( q
tvb now,tvbnow,bttvb& n' j5 I' f+ @1 c. a4 m. x) e
Question:
. G/ Q. U. y: S$ Z& ?4 a+ Otvb now,tvbnow,bttvb5.39.217.76. d+ k; |2 {8 O' e* |
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
6 P: y" E& `6 K. p2 @; `1 ~4 IOr just the weight of the water? 3 E; y, S5 u" m" H7 p! |7 S
9 i/ A u+ L& S' iTVBNOW 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。Answer:
+ N; Z& t! }3 U6 W! C9 W1 Utvb now,tvbnow,bttvb3 w. {% {+ l7 j& ^
It only needs to be designed to withstand the weight of the water!
9 \0 ~, S1 n1 Y M( q3 R+ }& MWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。. L# V6 a* K' e5 o1 {' N
- N+ o6 ~8 p! {# H5 ytvb now,tvbnow,bttvb H% o! [9 E( H4 P
The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb0 h2 S H! S4 Q; h
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.
! @9 [ m0 v9 T' S/ B/ u& {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.
& n! N5 B2 n% l4 `( b$ t* S2 ]5.39.217.76公仔箱論壇5 r5 G; U* ^( D' `$ G
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. & X. L0 g- p8 @5 O" w- c
( J" m% `" r. O9 z. Y0 P# r3 |
* [, X! @" m. t9 |5 r0 N( o5.39.217.76
! k9 A1 M9 Y1 o: C4 G
. C+ n4 V1 B5 VTVBNOW 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。
! Y9 v5 B/ u g" @5 L' C" @. t
" v: n+ i# Y: 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。) f7 \0 Z+ X+ ~8 ^8 f: o' H! c4 L4 l- y
公仔箱論壇, }! a8 f: m2 q: ?' m
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。* ?+ L: ^8 t2 W' x8 V8 O
|
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
5.39.217.76- s. U1 d. Q, C E& V/ x6 }, I
發表於 2011-10-15 09:35 PM
|