本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇+ k0 y% g4 B: |3 }
/ s& L1 W; C4 ]+ l, g; l$ SIf you are not a Physics person, read on and learn a fact of physics. 5.39.217.766 s2 [' A9 ]7 _' y3 r9 A( w1 F; ]
AMAZING! 5.39.217.764 G/ n9 t9 b, b8 @9 T
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Even after you see it, it is still hard to believe!5.39.217.76" w. i; n7 O1 n1 s# e
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
9 b+ x( ?$ W4 i4 M' T0 u; `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. 公仔箱論壇4 r- p: U9 `4 ~
It is located in the city of Magdeburg, near Berlin.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。6 H' G8 a- u% ]$ ^+ V; t
+ }; M5 m: K6 P Q+ A) 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 photo was taken on the day of inauguration.5.39.217.76$ F' C$ y! n* P$ R' }
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:$ \ h$ u3 N& O+ m% ^/ r
: N9 r, e V4 |& n$ PDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
, A! b# @; v6 OOr just the weight of the water?
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" i' A9 z# Y2 _' Y" w# ~. u! ]* n5.39.217.76Answer:
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It only needs to be designed to withstand the weight of the water! 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。$ M6 g, {2 s( E( Z* S9 Y
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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The Incredible Magdeburg Water Bridge in Germany
2 p% I, ^$ `: b$ ^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.4 w6 f/ S5 [5 p4 g1 Z B
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. 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。6 T5 `, ~9 V" f, l! s
5 s3 ^% @( V! I, _0 nConstruction 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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7 { \% g; s4 JTVBNOW 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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