本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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) ^+ {/ B. t0 I. ~5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.
% m$ S w, E* f2 }' B6 A) _tvb now,tvbnow,bttvbAMAZING!
3 ?7 C6 F1 R0 C+ b$ q( A! 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。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。8 j: t$ h# @9 q0 M
Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb; p" }9 R, V& ^( j
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
3 r& Q& h$ \3 D, Z3 C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.
* T; Q j* [# y2 \8 e4 F# HTVBNOW 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.公仔箱論壇% f! [1 N' o( M+ d/ o2 \6 q
' B8 y1 X7 x* D& `) m% z公仔箱論壇The photo was taken on the day of inauguration.
7 U9 l0 W, g3 T8 Q0 F) N) yTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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& u4 N& q& I& P& p6 |Question:0 j$ o$ Z; e; E4 V6 P
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5 p! l; t" h' n, s8 h0 z9 @$ t
Or just the weight of the water? 5.39.217.77:88988 n2 w. s2 s2 e8 ~, p
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Answer:公仔箱論壇 w( y# E/ l* w; j
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It only needs to be designed to withstand the weight of the water! . C1 q8 V' G: v5 z1 I% H9 c
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
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9 z9 T) O# L; c7 |+ ] }公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
7 p7 \( f( l% stvb now,tvbnow,bttvbThe 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.
9 E! |* N0 Y0 ^% D$ S( H' _3 ?5.39.217.77:8898The 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.
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U7 i) d7 `6 g) _: m7 ~- rTVBNOW 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。
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4 G7 f3 @; w- S! ^( R+ L公仔箱論壇
$ v" @: H: m9 W" q8 Y# }6 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。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。5 U* z( i8 {) x h; a G: q
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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。6 Y5 S! L4 ` z- A9 t3 `! r6 K
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