本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 7 W0 }! K# l, R! d/ x8 f: Z' t) ~
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If you are not a Physics person, read on and learn a fact of physics.
- Q# E) k' \$ d# x3 }' u3 Z' i公仔箱論壇AMAZING!
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- @# F" Y. ?. {* Q* ^: u! Q公仔箱論壇Even after you see it, it is still hard to believe!3 j% ^' i/ [* c0 `3 ?
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb0 g' U) D9 z) r4 g9 X; b
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
+ N" }, d* A9 s4 D6 p/ i8 n1 Ttvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.公仔箱論壇5 X X$ O2 V# i3 `- e9 F6 Q% [9 p
6 v4 Y8 `6 T+ k2 ?* c2 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。The photo was taken on the day of inauguration.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。+ I. t1 D7 V5 H" J/ {5 M
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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7 Y W6 O9 n. [' Ktvb now,tvbnow,bttvbQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
5 J5 G! n: b6 Z+ J, UOr just the weight of the water? 0 \" r0 k1 W: l% A. o* \2 N. I0 R
" ]) _# ]# u r" S; V# CAnswer:
: R% x" h" z9 h9 L9 E; 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。
- W$ q+ h9 D1 m1 A$ W: B- I+ UTVBNOW 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!
0 y; {- t1 c s1 ]/ ]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
( Y+ ^: t3 a1 c( ?3 g, [8 i; K' LTVBNOW 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 A# E9 }3 {- U! m A
2 x8 Q# F. T* r% z/ }- N7 q公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
/ U# c! F5 ?# \8 ]3 s: j" `% R9 L/ Ttvb now,tvbnow,bttvbThe 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.tvb now,tvbnow,bttvb# c* `* V% L- B6 J/ D
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.
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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. tvb now,tvbnow,bttvb- H: C# Z3 M* g7 f
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。1 {0 O2 z( |' e4 E
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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。. a4 Z1 a# Y. b1 v
4 Q% e: S# V( x) P6 v a5 j0 W公仔箱論壇, t8 W% B4 N- ~1 I7 C: o3 s9 ?
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。 p8 t$ S5 `3 m' H
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