本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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3 `5 Y- A" x B. {1 }If you are not a Physics person, read on and learn a fact of physics.
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' K6 @9 m, e% F公仔箱論壇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。# y; Q% M* y4 _9 {9 \' _% Y7 E
Even after you see it, it is still hard to believe!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。9 ?5 O" [5 u3 Q$ n8 K9 D
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9 K, E: ]3 R+ \5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
3 G: v% J7 ~, ^/ y5 s公仔箱論壇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。7 s0 H' ?+ i9 {' E) [/ c
It is located in the city of Magdeburg, near Berlin.0 O9 N4 X' h3 {5 Y& u
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The photo was taken on the day of inauguration.
( W" A) t- |! @. b( n0 g# {tvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.$ Q& @0 c6 v" s0 P, E
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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Answer:
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1 a- U4 ]& u3 a0 j/ o/ v1 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。It only needs to be designed to withstand the weight of the water!
# i! z8 X- i$ {3 z' {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# [# |9 F. ^7 c9 z
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u* ?1 U4 W) Q% n# `4 ]2 J+ O5.39.217.76The Incredible Magdeburg Water Bridge in Germany5.39.217.76, F1 g1 z0 Q. Y$ 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.
/ o8 E' p7 x) \8 {5.39.217.76The 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. 公仔箱論壇) W3 L% l4 ?* [9 N; X
3 j& H' n( N$ K. W6 d7 Q$ W. R公仔箱論壇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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0 q o* A5 y: P5.39.217.76公仔箱論壇8 Q* |6 Y# t) o$ M: s# m) f1 c
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