本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
5 U; p1 n1 _7 btvb now,tvbnow,bttvbTVBNOW 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 X" P. K+ |0 }% K- _; |2 ^% I
If 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!tvb now,tvbnow,bttvb% ~. @0 U5 \. N' ]
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。* A7 \1 J* O A E$ ]5 X
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. U# X- R6 G+ w/ O5 N0 t公仔箱論壇It is located in the city of Magdeburg, near Berlin.
& w* U* B8 U. f1 @8 a0 MTVBNOW 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。
q8 d8 t/ H) [ vTVBNOW 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.
6 _! i$ s9 |9 t+ W$ g2 S* Btvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question: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 N/ W( b6 N c
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
+ S3 D+ U. V: r5 E2 X eOr just the weight of the water? tvb now,tvbnow,bttvb' {+ b# ?( ^* o: 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。, ?4 e+ |4 [4 l; _, l
Answer:
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It only needs to be designed to withstand the weight of the water! # V5 L/ u& t0 T' Y& v& 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 loaded/ b' b' J8 Q t A$ P
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; Z$ p; W( f0 j. 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。The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb: d) X, |/ |5 y3 C/ w0 L
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.
$ g y# w, ?' g4 e: ?9 gtvboxnow.comThe 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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