EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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_+ H$ W$ s- U7 [4 i5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!
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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。! |. S4 P; o3 L0 s
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! # F/ L) C; @3 }
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
$ W1 G+ A- @) F1 J8 w& @tvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
! @* _( F: f3 ` |$ sTVBNOW 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。
/ X4 L& l- J# h$ tTVBNOW 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.
: \, Q+ F; c# f6 ]9 L7 a公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇+ \5 T. d8 T9 m, v) d; T
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。( b" [, s* {; b* y$ x
Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,- T a4 r6 E7 R$ e
Or just the weight of the water? 5.39.217.77:88988 V# V3 ?* T/ d* Q
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Answer:
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It only needs to be designed to withstand the weight of the water!
; D. H4 s3 g2 L& O5.39.217.77:8898Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded公仔箱論壇5 i, G5 X5 F9 H6 h
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5 V% N- \/ k5 Q8 e& `5 V4 LTVBNOW 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 Incredible Magdeburg Water Bridge in Germany
! D9 @& {0 r a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.
' s! Z X/ r1 T1 S* PTVBNOW 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. 5.39.217.77:8898/ t- t* }9 V1 ]! d
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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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' F) s) s$ h) _' p+ [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。公仔箱論壇5 z4 n8 Z' I0 i8 H% l# L* Q. s
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