本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics. 5.39.217.768 ^+ s# W8 s% E- a/ a2 U9 D" E/ i
AMAZING! tvb now,tvbnow,bttvb1 y: O2 Y5 r7 W7 v+ ^0 |: P
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Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
' e7 N, D0 k) `! A/ ]9 ~$ ^* z) J! iThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
5 M! G) p6 ?0 v1 p+ w$ D5.39.217.76It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb. V6 Y0 s% b5 k8 l
) r7 o' u0 I+ G5.39.217.76The photo was taken on the day of inauguration.
/ T" C* ^7 V' U- d8 u9 P公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.8 K6 w9 M2 Z4 `
5 t! L$ v2 v" \- SQuestion:5.39.217.76: x( \7 Z& Z1 S7 k
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇0 L, j# u& k4 o' a1 C
Or just the weight of the water? : V& L4 O: ~( p
" R0 W9 E+ Y; ^Answer:
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/ z* I& \+ K+ D9 Ptvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water!
6 E/ |/ s! [7 Z, b5 n8 g7 F/ H公仔箱論壇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
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The Incredible Magdeburg Water Bridge in Germany
+ k% u4 W* ^6 @, Q& s' [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。) t5 b+ ~# n( s! u
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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8 ]; f6 i. A1 t4 p- \5.39.217.76Construction 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4 X6 @8 D& t! u# R
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" R8 Y: Z u; X5 X# t! ~& 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。 |
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