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。8 y. n# n) _+ O, f! S- H5 ~
AMAZING!
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Even after you see it, it is still hard to believe!
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6 o0 d8 f2 p# N) r% wtvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
8 F/ m# K N+ }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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
& l7 R, B' i5 J; v6 }+ ~tvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.5.39.217.77:88985 ^4 q( D; |& d( O7 U5 i
/ w r+ b+ ]# u+ L$ s3 G; p. {The photo was taken on the day of inauguration.5.39.217.77:8898& D3 V# A% E( r7 P6 m
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:5.39.217.77:8898) l& G+ U5 ]4 G/ n
9 Z; N0 b- A! Y4 G2 d3 j公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
) e. M6 ~! s* t+ D: ?$ V( ]5 Y# |5 eOr just the weight of the water? . w d" Q$ l8 a0 O5 W$ T4 u
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Answer:
V( U) @) C5 T5.39.217.77:8898TVBNOW 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。& y b, ]! B, i- H
It only needs to be designed to withstand the weight of the water!
1 u; Z" D# C6 ?6 ~; F0 L2 cWhy? 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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$ e% H6 |. M% [) c5 [* [$ tThe Incredible Magdeburg Water Bridge in Germany
" ?" T. C1 E0 X, @# c( Wtvb 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.
2 v3 P c, D4 ?# l P+ }: kTVBNOW 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 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,bttvb2 y3 j/ N& P* x1 P* |
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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。" K p7 G f7 y$ j
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tvb now,tvbnow,bttvb' W7 _1 o6 C5 V( q
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 U) |1 Q& `9 c; }7 p
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