本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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7 n9 R p; b1 i I Ytvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
, j9 ~3 B( g5 D! e% O) MTVBNOW 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。AMAZING!
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Even after you see it, it is still hard to believe!5.39.217.77! C1 d, r4 t, s/ M4 X- ]5 m9 x
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" I. Z4 q6 {) d0 u- N公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 0 \* ^& {6 p9 {# k
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 o$ a' c' L2 m8 b7 p! QTVBNOW 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 is located in the city of Magdeburg, near Berlin.
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! e! \$ Q5 R8 S公仔箱論壇The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb D7 `7 } {* n2 V
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.776 U6 g$ ^8 e+ o, |9 p( t) R
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Question:
r0 _% q! z; z, R- h1 M5.39.217.77
% {. K& \; o; H5 B. S7 u& 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.77' }7 V4 n1 \1 i2 p: C0 |
Or just the weight of the water?
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7 i0 u3 l( V. d3 e& c3 L2 k# L公仔箱論壇Answer:* u9 \, m+ g+ ?7 }3 ?
: p. y: S7 _# M5 O公仔箱論壇It only needs to be designed to withstand the weight of the water!
1 P0 |" R+ V9 g4 `tvb now,tvbnow,bttvbWhy? 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
# Q( x& ?5 _4 q) ?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.
0 N& |# @9 K- o# b2 M2 rtvb now,tvbnow,bttvbThe 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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) y# m" m, E' }: [tvb now,tvbnow,bttvbConstruction 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. & S2 d; C8 x/ m0 y O* e
. u7 F9 E/ {# ~& Y, y9 MTVBNOW 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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& }8 Z8 ^, F8 D, J! |% N公仔箱論壇5.39.217.77, o0 b0 L( \* j% p" q4 h3 ]
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