本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb& f; U7 M- J; w3 M+ l; J. J0 _; U3 E
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If you are not a Physics person, read on and learn a fact of physics. $ U9 ?+ o4 b+ b1 X1 C6 R) ~1 l. T
AMAZING! _ d2 v: b4 h' h6 ^ @9 o
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。- Q* ^, s% o# {3 v% @( \) N
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。7 Z. u7 i) t* U/ k: L
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。# O( f! D/ {: C2 h& D
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
, ~& }. w; U4 ^& ^$ 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
# H2 n# b- e7 o& A; J+ yIt is located in the city of Magdeburg, near Berlin.9 \8 @5 r+ U( k+ [
3 N8 j" L ~* zThe photo was taken on the day of inauguration.
; c5 v/ y2 J4 s B- w9 q' V, H r9 r公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76% z; K, F H& p, j- L Q
: _6 v# A( t/ c/ a$ T4 _3 PQuestion: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。1 C3 I$ w/ ~( K( f. O
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
; d8 b5 A4 K9 {! o0 qOr just the weight of the water? tvb now,tvbnow,bttvb4 A$ _- ]9 E1 _$ C' D' i
/ H0 _: i- s5 H- Y% Ftvb now,tvbnow,bttvbAnswer:
: H. `, U+ T& \; L, L& P5.39.217.76TVBNOW 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。' D# ^. ^ L8 o
It only needs to be designed to withstand the weight of the water! 公仔箱論壇5 H7 b) V) Z0 K# o" c) T, n
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.76, g- P( U( g3 S
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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。; B& D' D/ @( f* z
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.
& R2 u* t! s+ D6 y& L- @8 p9 _tvb now,tvbnow,bttvbThe 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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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. $ N! M1 `1 }$ G
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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。! W# q6 W# z3 J2 y) Y) o& ]1 M5 C
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