本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.769 |6 k: B: R2 `& ^. }# @
: F# P9 j& [0 U6 k% O0 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。If you are not a Physics person, read on and learn a fact of physics. 5.39.217.76% U3 ~7 b6 `! a
AMAZING!
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) Z" o) z/ I3 X7 h$ F5.39.217.76Even after you see it, it is still hard to believe!公仔箱論壇6 {- [1 D# y1 ~
6 z3 C8 W% O! X5 P/ H% A3 O; 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。2 _0 |: Y$ ?1 c( F3 F7 @4 o; e$ g3 A
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.766 X# c& w9 }# v$ _- E0 M% o
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
3 m- `* [8 D1 D6 D: ^9 X5.39.217.76It is located in the city of Magdeburg, near Berlin.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。& w8 k1 L2 @' c% \
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The photo was taken on the day of inauguration.
% d& L0 B9 _( A z9 h公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76; s$ E- P0 H0 h* s
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Question:
7 r* I) {/ Z2 @, Ltvb now,tvbnow,bttvb
+ I R, \) p. k8 j4 H( l! f公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb- ]. L- J5 c/ F, G- ?
Or just the weight of the water?
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) v B0 @3 ~4 p r公仔箱論壇Answer:tvb now,tvbnow,bttvb& R2 T& W( i, v. b& F# Z+ l9 `
9 y$ k4 l5 U+ w2 l; cTVBNOW 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。It only needs to be designed to withstand the weight of the water! / |) {. q! L/ R* `) \+ K2 M
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。- q) \; \# c' x/ u6 H6 |4 ] F
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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。* }4 j0 m+ R# |. F# Q( g2 }
The Incredible Magdeburg Water Bridge in Germany5.39.217.76: D/ l, I& E J- {( i
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.! P* w: C) ~ \2 h$ r
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. ) i3 e/ g+ l( Q9 E
$ T* I$ s( B! g$ z- }7 z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. - f/ z4 N8 @) {1 v0 w# ^5 f
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2 `: w6 y) C% {9 b' ?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,bttvb5 @' K- {5 V4 q3 W4 [" w8 Z6 P" m: s
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