本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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- H( v$ K* O0 u. v/ cIf you are not a Physics person, read on and learn a fact of physics.
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* K# ~9 k3 x6 T# k0 j& A- O/ B- {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 z7 j/ Z! m7 m) ~5 j. Ctvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!os.tvboxnow.com3 Q0 m, l* `1 y' G5 t ~% U
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。) U- u/ y4 r" d, n% f8 w; A4 o5 s$ W9 Q
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb/ B6 }7 O, j/ n& F. P. e3 a
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ) A4 t2 J t/ n0 t4 A ]
It is located in the city of Magdeburg, near Berlin.os.tvboxnow.com0 u. A/ T8 k: u+ q/ E8 m# j0 X2 N
) _& E1 L& v4 J, YTVBNOW 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。The photo was taken on the day of inauguration.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: \3 z* t8 C9 x
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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/ }' a+ }% |0 A# |os.tvboxnow.comDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
, b1 h6 U# E# K! {# x r, MOr just the weight of the water? 公仔箱論壇9 |% i2 H3 q" f8 X, b
* z) Q U. I5 m( L5 P; o公仔箱論壇Answer:
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It only needs to be designed to withstand the weight of the water! 公仔箱論壇9 I1 P' ~% D" g& o: }0 e3 ]- k
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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" ~& B* i6 H+ ^8 I, N. @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。The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb* N. W$ ?# A$ M, ~4 e) ^% k3 e
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.
- m) l& r& B3 O! [* b8 ktvb 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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; ]0 ]3 S4 h% y1 V! o7 h% tTVBNOW 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.
6 o, h& B1 }9 x' d& c( b$ `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。
% Z4 `$ n+ n2 I: ]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。- P3 n/ D& f" p+ |& a0 ^; W
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發表於 2011-10-2 10:09 PM
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