本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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S, B! z- S' a% N5.39.217.76If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!
2 Z9 V4 _7 w, M! bTVBNOW 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。; F2 y2 Q6 n3 n7 h" u" `' N% j- Y
4 F# o+ O. g* u+ dTVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇! `6 o0 E$ m# Z+ F2 C/ [
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
! H7 N1 l/ n) f: I* DIt is located in the city of Magdeburg, near Berlin.5.39.217.764 ]5 Z# n9 ~ _ ~$ i1 B
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The photo was taken on the day of inauguration.
; F1 _5 G) J$ R9 O ~' z: ?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) P5 C: B/ U# t# {& g' f/ ^- i
( C2 ~% j$ n* r7 W: y( XQuestion:公仔箱論壇/ `1 @$ a* G9 u8 ]) b- l* g7 i
, ]7 b) f( j N' g, [- X5 nDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
" b3 _1 D' H, E6 i0 V( s5.39.217.76Or just the weight of the water?
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1 a4 X8 g! u F3 C公仔箱論壇Answer:tvb now,tvbnow,bttvb) r7 C% q; Y" Y' m
& u9 U4 S) K# @- b* F9 w7 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。It only needs to be designed to withstand the weight of the water!
' p- W( k4 \- ]2 b( l* {% m公仔箱論壇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* T5 T: N$ `4 U/ ~ ?/ _# H
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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。' d. x- u1 P0 V& P/ ^- G
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.
R/ A2 |/ E |4 etvb 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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( u. ^. j) F+ x% Utvb now,tvbnow,bttvbConstruction 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. tvb now,tvbnow,bttvb* ?) w0 F/ E2 k
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。- m- o4 w% d# B P) L0 U4 f
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4 l0 r% L3 d& N& D公仔箱論壇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( s2 x9 H6 h2 N$ N1 n
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