本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb; l8 S9 b- ]& K( F* o$ s/ 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。5 t f6 [8 x1 V- N2 {) c# }
If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇) k, H1 l! S# G6 K! `. E
AMAZING! $ R3 t O- I8 N
2 H9 d+ [+ \6 |0 I% K5 l5.39.217.76Even after you see it, it is still hard to believe!5.39.217.76+ ~( h2 C$ S* l/ h5 o3 Q6 x
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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" p$ I' }5 H' @2 O* z
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( k4 j \$ J; W' V& a5 oIt is located in the city of Magdeburg, near Berlin.
' O) t1 K. i( P) d 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。, R: k$ v: [! H! \( ^7 m
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。% f" j( A1 G$ R& O0 W; D( @0 G
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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/ I2 B- C3 F0 K% i1 W8 {4 g; V8 vQuestion:, n- d6 z) A9 w& ]/ i, x
- R4 B% m% g8 z! A5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
8 P: B5 r& ^% M+ Y2 Y7 jTVBNOW 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。Or just the weight of the water?
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Answer:5.39.217.76' P' z% g! Y* m- `& B: B K) Q# B
$ w' O9 L( P$ b% l, @公仔箱論壇It only needs to be designed to withstand the weight of the water!
, Q& t/ |. U) `1 S3 D5.39.217.76Why? 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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$ X( D: z# i; j9 ^* ^5 N. w5.39.217.76The Incredible Magdeburg Water Bridge in Germany
. t5 a# V5 z9 s( l" a/ ?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 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.
0 H1 @% p% C; l( LThe 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. 5.39.217.762 A6 u9 Y; ]) C p: ^/ X6 ^% @
$ g5 O" g# o) 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。
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7 M9 S% l/ j7 x2 b: L' D; I# Y" k6 m公仔箱論壇& Y5 y1 X9 F7 w0 L" x. a& r+ o
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! c3 V9 ?1 C9 R1 J1 s& Z( ATVBNOW 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。公仔箱論壇% X* `5 O2 [! c. e" ?3 s9 ^( X+ b; t8 W
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