本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76; T' I9 x' `$ U c5 e
F* [2 K' n6 Z7 K% m4 mTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics.
6 b+ |- g; c; x" [tvb now,tvbnow,bttvbAMAZING!
7 {+ j3 p) R, F& f公仔箱論壇
4 D+ `) {; H& j4 I _% L/ 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。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。" b. N- M9 ?' T2 ?1 W7 D* e! H' |
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0 O- y8 c+ ]* ?! g+ T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! 4 i. ]9 {/ l: {% w+ w! G
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
5 l J2 [# w2 @ i$ d5 [5 rtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
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) Q* c- G5 j5 L/ E# J4 q5.39.217.76The photo was taken on the day of inauguration.公仔箱論壇# N3 `8 l/ E) P( a- @8 d/ Z* B
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
2 _4 f. d5 z% g( b0 F2 a, ZTVBNOW 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4 [) m* m; P1 D! v
Question:
6 x0 Q& V# ]: H8 ]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。
3 x" w5 R2 v: J5 K# j Mtvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
$ _* H$ I# f% z0 s公仔箱論壇Or just the weight of the water? 5.39.217.762 h" w% n: ]6 z' s" W5 L
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Answer:
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6 u( `/ J2 E8 _( c' F$ nTVBNOW 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! tvb now,tvbnow,bttvb1 E& {; l* ?$ V7 g* ?9 P' K$ A8 S
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。+ k3 u7 s: S, R D; H$ i
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" f! n7 }: s9 Y% |+ }公仔箱論壇The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。& V7 U2 M7 M8 T# {4 s7 l
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.5.39.217.76( [* S( S: B: x( `+ \
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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5 u0 o4 t# O/ p5 ZTVBNOW 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。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. ( W0 T7 e! G& ^& B
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