本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
$ R7 Z$ w/ m" b* `7 H+ C! ?8 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。
5 M& d+ k5 F0 H' p: A7 K7 J3 H/ ?5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!
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5 n# R3 J. G* p4 ?# ETVBNOW 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,bttvb2 S/ y' C5 S$ R. O
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇! d) w/ q3 a& {. e! w
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。6 ~3 X/ J+ W' N! j9 O
It is located in the city of Magdeburg, near Berlin.6 W/ c Y$ l* r4 d
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The photo was taken on the day of inauguration.* x \( {' f+ o. v/ M
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists., ^0 z* M! w$ L7 N4 _
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Question:
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2 w. K* z! \9 p' M" X" _$ L7 K- w5.39.217.77:8898Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
. f {; x- I' Y1 b1 G9 D公仔箱論壇Or just the weight of the water? . a9 C Z2 c# W2 p4 g, P
4 h* _2 z! e7 D9 p0 NAnswer:公仔箱論壇$ d3 V* J( t7 N* M' e
$ L, C" G0 i sIt only needs to be designed to withstand the weight of the water! 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。$ o* J" u+ N B* z: 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 loaded2 H, q, W, [# `4 A% O E
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The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。( }* m2 B" E, U' n, R$ |
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.
/ y. J1 c D, `9 H( J M& |公仔箱論壇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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) t: s6 \, y' @) ~* T4 t0 [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。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.
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