本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
" ^' e. o, q9 q |& J! y! I5.39.217.77:8898tvb now,tvbnow,bttvb3 F6 h. u6 j; b
If you are not a Physics person, read on and learn a fact of physics.
! a6 k8 i$ n# F: V: x公仔箱論壇AMAZING!
: M8 ]/ f& \$ k! g: Y2 Q" r/ Qtvb now,tvbnow,bttvb4 A i; l4 n$ I! L0 Q7 M
Even after you see it, it is still hard to believe!
+ @$ O7 e$ S8 P: b8 [# e5 itvb now,tvbnow,bttvb公仔箱論壇" q: L4 [ J4 i8 F! {3 R
: N! s E, ~! q, x+ @) o6 K, F2 CMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! % \/ Z5 O* D- w) _$ G3 s
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
r9 X, C: C0 |1 u) H% t公仔箱論壇It is located in the city of Magdeburg, near Berlin.
* h2 R B$ Y# {公仔箱論壇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。" T( T' {; x( \" V% B- m$ l
The photo was taken on the day of inauguration.
; I4 S2 o9 |* j, F8 p1 I2 YTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
1 d7 A5 A+ D3 r; ^$ N7 H. ~: ^$ U( @
6 Z" w. y$ R6 H5 xQuestion:
! v) k0 U. n( o! J. F* Ytvb now,tvbnow,bttvb M a! |, U Z7 a8 i. p7 L4 a
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
; s$ O% \6 L6 c+ @5 F公仔箱論壇Or just the weight of the water?
3 p$ d" V' K4 j& z0 @9 BTVBNOW 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/ ?! @/ r. Z$ Y/ a7 ]
Answer:
8 ~) |9 S* ^+ \9 A+ L" G6 ^
0 u( G) p; ^4 [/ I4 d2 N& wIt only needs to be designed to withstand the weight of the water! 5.39.217.77:8898) z. ^8 O0 [) Q& L" _
Why? 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。* z) M# Z0 R7 K* G5 }& b# V" {
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。7 d9 B! K6 W' G* M" U4 r1 O; l4 e
3 n# _7 W% q8 I. i4 v6 r. qThe Incredible Magdeburg Water Bridge in Germany公仔箱論壇* E) B9 m# i6 O2 G1 e4 B
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.公仔箱論壇( \5 z: t& s% O
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.
1 Y" @/ Y1 k1 f: R; f6 D6 o/ [5 T公仔箱論壇
3 y; M3 O% s( v7 z$ j3 }9 T ]) w' I! H公仔箱論壇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. 5.39.217.77:8898% u2 `5 M/ Y% p; K
* V0 \3 T* Q0 Y0 b+ i! z
0 Y, p& S: ~, r& l, V+ J9 C! p: Y8 n. m% n' k! j- f0 G+ B/ Y( h; @
6 Y' W" J8 {4 \1 n5 J
. p9 g4 i) e1 _) {' A g
5 H0 J1 \- a) p/ ^- H% h0 g: l0 [9 v
. s( }; p; A6 A8 ?# q公仔箱論壇5.39.217.77:8898) U4 B. O, f; O. I7 _
, l, J. o* T/ r* M. o- ZTVBNOW 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。 |
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
|