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. 2 V: b' p' ]6 j8 t/ \% S/ n
AMAZING!
% S8 Y4 B( P7 i' g# K8 o公仔箱論壇公仔箱論壇% G$ _) a/ e( ]2 t0 h4 A
Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb% d5 ? l$ {$ O, @) z9 g
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4 `! ?( u% [+ p" ?/ M公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
% [1 I" G8 J0 F( ?7 L. ^, D/ f5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. # e2 ^8 k6 m! M
It is located in the city of Magdeburg, near Berlin.公仔箱論壇, d9 \1 }+ @8 r' k
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The photo was taken on the day of inauguration.
3 B4 {9 B" W0 D( w) L: z+ \5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76) K [: j C- o5 u$ B
. q) t2 u" Q* w7 \5 ^5 pQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
1 z2 C9 |2 c6 Y6 S1 O0 xOr just the weight of the water?
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3 \' R; F }$ O( Z" xtvb now,tvbnow,bttvbAnswer:
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It only needs to be designed to withstand the weight of the water!
( r5 x( A5 P$ bWhy? 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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# y. z0 B I. n# z( ^tvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany
' }3 l, x3 P) b: A3 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。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.
; `% t; U d5 F% z$ Y7 j. mThe 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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# K0 f3 h f. Q5.39.217.76Construction 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.
+ c8 a7 E6 Z; y) @5 V% ptvb now,tvbnow,bttvbTVBNOW 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。' a) e/ [, H2 ~" r, S; R3 s+ v
+ L+ K/ i! v! H% M, o9 C! E, c! A4 stvb now,tvbnow,bttvb公仔箱論壇, l" v6 q7 H* q/ x7 k1 N
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- s" g6 p3 }3 I8 V2 N! Ytvb now,tvbnow,bttvbtvb now,tvbnow,bttvb. g- Y+ N& _4 w" Y- s8 d6 o
5 L! M: J, e4 X5 l& h: y; uTVBNOW 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。tvb now,tvbnow,bttvb, g: w. R1 V* H6 }8 f. i
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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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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。7 c( F! i+ G& t+ S. u
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