本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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9 B& Z) F. C" J$ G$ E& s# Jtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
) H4 i$ h ~5 c' j& T) H公仔箱論壇AMAZING!
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) I. N2 X4 k# t# o4 T' M0 I9 A2 Otvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!公仔箱論壇# L' z* F _* G6 u4 j+ P6 a
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2 u; S5 k- K& G6 E" U& T, ftvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
# _; Q1 P; ^& o2 k- k9 [( t公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
5 I- w9 g1 P9 N0 u* Z5 R- V& f; i: 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。It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.4 u3 e& E2 v8 r0 S$ ]$ e% G
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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* o; L) ^; C$ W) I$ q公仔箱論壇Question:# t5 f4 Y0 B/ W ?% }$ H% d
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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。/ A3 g G0 f) r5 a. P
Or just the weight of the water? : k! o* T- ]- M- x3 V
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Answer:5.39.217.762 g, n7 t$ u4 b6 d/ L, J! ~
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It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb( v( ?0 j* ^8 ~' l/ O1 D
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb( ^2 K) M5 x% a a3 x
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$ a3 v2 F1 V) c( m7 P' l5.39.217.76The 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。2 K; |1 f/ j2 r3 J+ S3 R# D
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.
. y2 t. W! h" Z* aThe 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。# N# u% Z5 h% h6 T* }) J. q
# J! |9 b5 Z! e' N# e( t5.39.217.76Construction 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.
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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。& @/ `$ B/ i1 T& E
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