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. 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。 v% S7 U6 H5 Y/ c( V. M+ n$ `
AMAZING! 公仔箱論壇2 o: Z8 M. e' E5 i4 y0 J4 }; d! d
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Even after you see it, it is still hard to believe!
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/ T* ^2 l1 l9 n7 @" KMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇' v" S2 E3 x: `6 L5 e Q! n
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. Z3 u9 X. S4 ?0 n) k5 o _5.39.217.76It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.0 V. T! ?# W' h0 I
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.% X2 K) ^0 Z! ~# h# a
7 t: \7 j% y) [! Q fQuestion: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: U! q; {( i0 A/ w5 ^& c( [) u, ?
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,9 K/ p4 b8 U B$ n9 S m. v1 _
Or just the weight of the water?
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2 a' {% x; ?: T% s9 G6 N公仔箱論壇Answer:
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It only needs to be designed to withstand the weight of the water!
8 S9 s) U, H, l' u+ I7 H3 ^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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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。: C& U9 l1 P( P& M! @2 K5 c5 z
The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb7 n* ~" S, z0 X
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.公仔箱論壇) d2 W; e6 W k; j, q7 O5 E: @
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. + Z5 M( {6 v- B% e4 K: R; U& l
/ N. ^0 C& ~- B: l) E! \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. 公仔箱論壇' a) Z- p* d9 F1 X
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, H+ T% `( g! _/ j4 C* l 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。
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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。1 s/ O! z* A$ Q1 l
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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。" e6 p6 R, u3 \0 g, G5 a
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