本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇4 S% t8 q7 f; J* a. k
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If you are not a Physics person, read on and learn a fact of physics.
2 h5 ~3 H( [( C' U; d# L& x$ F- Ltvb now,tvbnow,bttvbAMAZING!
5 f/ R: r$ c) i1 g8 `( K( m3 z& Cwww3.tvboxnow.com) \8 I' _. m4 q3 I1 ^& d) a% s
Even after you see it, it is still hard to believe!9 }) g1 j/ y( [0 I/ q1 F7 U: B
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: j, k1 q& o3 F' p P r" KMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! . m( }2 D4 o% U' F/ H
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 M/ ?. F9 e- u% b: c2 A$ [www3.tvboxnow.comIt is located in the city of Magdeburg, near Berlin.; I0 f! k2 K) A1 v" K' O
1 n9 U; e+ P) m2 n/ ?www3.tvboxnow.comThe photo was taken on the day of inauguration.
2 `6 t* {8 c: n& q& 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:公仔箱論壇8 x: T" n( u5 @) U
' L" U( \. A2 KDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
- E/ @1 `, c% h# wOr just the weight of the water? tvb now,tvbnow,bttvb: \5 d, C" M: `* ~
# T! S3 V" X5 R+ l0 z/ tAnswer:
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6 ?* g' Z7 d/ \* m5 ]It only needs to be designed to withstand the weight of the water! 2 T, i( a! H9 ]) w
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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( Y1 v' S$ o1 V/ ^8 a/ l: u
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! A9 \; X( Z+ M: E. ntvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany公仔箱論壇) E3 ~: y3 V! }# \
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.
" A" u6 M- m) ~3 htvb 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. ' |) H% |& x( T. t& r; p
$ A" ]& c/ W. l* Z- XConstruction 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. www3.tvboxnow.com( N& h7 K3 R* E
: o$ N5 m. I) |% m: R2 Etvb 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。+ s" w1 r( j* V- S8 j+ s
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1 C% m; H" \6 |3 @公仔箱論壇7 Q4 ~, O4 [. |" R) D1 Q# e) H4 t# Q
: T/ Y- D2 K2 W! [( c% Ytvb 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。3 k# Q, p/ x3 m# O7 j* |9 c6 ?# _! U1 X
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