本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
7 N. d! _; ~" {6 E3 o( S8 P( XTVBNOW 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 F8 S. D% c, M! s# N! t" a2 O/ H
If you are not a Physics person, read on and learn a fact of physics.
8 H0 L3 b0 X- c5 Z* J公仔箱論壇AMAZING!
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3 }$ ^1 q4 `* hEven after you see it, it is still hard to believe!5.39.217.77:8898! v. g g, w0 z
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
3 {. N3 O( ~2 T! C9 Qtvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. g0 w; J* w ~2 A0 b6 o2 fTVBNOW 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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! j5 w! J' P+ s- r4 _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。The photo was taken on the day of inauguration.公仔箱論壇! ~- I: z% X" i& V. s+ g6 M9 ]
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇( p! d, S% E9 I1 j9 m- q
/ N4 h; R" h" |9 h( q9 x* atvb now,tvbnow,bttvbQuestion:5.39.217.77:88980 ?0 T. }% H* s+ k+ A
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
3 q5 r! C f2 |( qOr just the weight of the water?
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+ z) m" Q% X# t& D% O5.39.217.77:8898Answer:
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It only needs to be designed to withstand the weight of the water!
8 J/ F ]! F7 b$ a; L. c: q. Ztvb 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
6 A- Y D; Z# H: `5 L1 ?tvb now,tvbnow,bttvbtvb now,tvbnow,bttvb5 O7 o. h: T* {) o( J
7 B7 E1 J, j5 I: Y* otvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany
' ]" O4 |! Y# O公仔箱論壇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.
( c+ h% G7 j* x% @2 [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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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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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。# U. {2 U( w# o4 Z5 V& L
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