本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ( ~# k8 R* r+ k- }
- W! j) e* D( M, {. a4 _8 _/ b公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
' [/ B/ a% n1 Q0 y! p ztvb now,tvbnow,bttvbAMAZING! 5.39.217.76: `. b1 e# {* H! O( H% z
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。! Z5 A# H$ b* H b, A
Even after you see it, it is still hard to believe!
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9 }' e; W9 J1 c+ y/ Dtvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
7 @0 p3 u% U7 j, {9 q ~5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
: U6 `/ N3 j( Q) s" C% E公仔箱論壇It is located in the city of Magdeburg, near Berlin.; B& H W, N$ a: C6 c5 F/ l
2 s$ D* t, _* z9 v, w3 Z2 I+ y5.39.217.76The photo was taken on the day of inauguration.
/ s0 `- T+ T: e4 jTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
* ^) {1 V8 k4 \6 v% E& P5 _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。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。8 t; Q: ]+ F. q0 z- Q2 i
Question:
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i/ B g$ B" o* F公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.762 E) i) I3 T* C/ M a
Or just the weight of the water? 公仔箱論壇! O: Q2 z: e$ `" Z w
8 i y; {6 m# @0 HAnswer:
* q+ x6 U5 U6 |1 A& ?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。
9 k6 [! \$ i8 v' V8 E' @$ n0 e# dIt only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb4 u' Y7 b8 X/ [3 O
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! ?# }2 a: _& ]) Q6 A
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0 {+ }4 X; I* h$ ~( l% M$ A3 I5.39.217.76The Incredible Magdeburg Water Bridge in Germany
7 x/ S0 I6 \4 n$ ~. r$ L- E5.39.217.76The 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.
3 _8 z# L! {. ]: sThe 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. : u# T7 ?3 O( U }( d
% U6 U, f7 H& T% `; \ D7 z1 h/ pTVBNOW 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。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.
2 ^/ t3 O' X* ]% G3 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。
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, C; [: G# R3 `9 [& }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。2 v$ N" {* p$ s9 Z) `3 F
* w8 T- X/ Y% b( ?' ?0 l, Z( S+ H7 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。
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0 u- ~: b0 [+ yTVBNOW 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 G9 D; ~) C# H( D0 S
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