本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ; E& g# D$ g$ }; r x
% |. ^( a- {" C' |7 { I! G9 gIf you are not a Physics person, read on and learn a fact of physics. 0 }- f2 I1 O. w% H8 S$ |1 }; H- ]
AMAZING! tvb now,tvbnow,bttvb0 f9 g, } A7 a- V# j: W6 o) Z
$ C( `) [3 @& L8 J, U* `3 |Even after you see it, it is still hard to believe!公仔箱論壇" _# q, }7 E2 Y/ z2 W3 Z3 a0 z- p
1 e9 F- S! j% D" U$ G5.39.217.76tvb now,tvbnow,bttvb2 i8 b: c) {5 J3 B' Q3 a
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb, q# W3 r0 _$ H/ k% @
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
! H) F& K! N. B% |! Y) l9 R' h& zIt is located in the city of Magdeburg, near Berlin.5.39.217.769 h6 ?; H! B; Z1 P+ \* C
8 H; a5 W* ^* G# |% o) BThe photo was taken on the day of inauguration.tvb now,tvbnow,bttvb* m* w$ Y* _8 `6 D* ], v
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.761 Z8 A% Z# n- h
tvb now,tvbnow,bttvb7 x6 R# j5 u# w5 T7 D _" e
Question:
/ X2 K( j" R* a" 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。# X& R' `, h6 b, M: |! `
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
" f+ y0 F' z! A, x8 `) _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。Or just the weight of the water?
{9 `- d1 a# ~, k6 e4 GTVBNOW 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。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。, K8 S: Z( C) q5 Q9 P4 }
Answer:
0 `) t9 b; W* O8 C0 v$ D, Q7 H. R/ f: y" ^* N% P
It only needs to be designed to withstand the weight of the water!
3 z2 l3 D) X6 OWhy? 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。" @7 P( g$ L( f# v0 F
公仔箱論壇: E6 ]4 N. a# I3 V2 A4 ]$ e) V
) a9 c+ c( h P g
The Incredible Magdeburg Water Bridge in Germany公仔箱論壇( }7 N3 {) ]' {$ B* X; g
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.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。( {: W3 N, d+ ^% ?9 ^
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.
7 X9 ?9 f) [9 W# X7 N# ]1 H1 H公仔箱論壇' Y* x3 e p4 z" k2 N7 L/ J& j
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. 公仔箱論壇- j8 W* K! D* p/ u: a
# q" Z7 \, Z8 s; e x4 s公仔箱論壇
, n2 }/ r; w, u- K% o: ?4 B' p6 U
) W1 p5 n2 L* x5.39.217.76$ H- a: h: s$ H3 L- p3 n. K# }' t1 J
6 w P' o: q ^( ]! e" ]公仔箱論壇
2 ~) g# Q3 `% S; H4 l& p, O公仔箱論壇
$ G( Y# W+ M/ b! W* s7 W1 l公仔箱論壇5.39.217.76 v3 B3 n4 w) f1 T
tvb now,tvbnow,bttvb# r( a! o4 |$ Y9 U3 h, y
|
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
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。& G# i' H, {7 r [/ X
發表於 2011-10-15 09:35 PM
|