本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb9 J# R. O( ]1 L) ]: |1 S; J) O' 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。5 w! t7 t# `. o; q* l$ n: X
If you are not a Physics person, read on and learn a fact of physics.
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* `5 N" }1 _2 P& [: ]( }公仔箱論壇Even after you see it, it is still hard to believe!
5 v+ S: u7 k: h5.39.217.76TVBNOW 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 v0 a8 J7 }, I+ X7 }( M6 B: q
- n* V7 f9 V/ E R |公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! $ M6 J V. c6 l# \+ j1 v( j- ~% z
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb6 g0 @ m/ i% B; [8 ~- C
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
; D8 V: ?5 d$ A: _$ S' X2 e4 b1 {5.39.217.76To 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。9 s7 j( D, ?. Z2 h' L1 b! O
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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& x- h3 K+ Q- [, u公仔箱論壇Answer:
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/ n3 b1 B1 g) z+ v) _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。It only needs to be designed to withstand the weight of the water! " T8 K$ f( |4 n& 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" ^& ]$ F2 G# X( W8 J8 s
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The Incredible Magdeburg Water Bridge in Germany
$ `3 p5 q4 m8 v! b0 E% U9 u+ {4 KTVBNOW 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.5.39.217.76# X$ c# ~8 Z/ c% C
The 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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, p0 F; w" ~7 j) t" 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。
5 w, S& _) w j) G% s公仔箱論壇5.39.217.76; e& T: q' C7 u9 z+ w! k2 a
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6 H" d$ C5 t- 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。
6 k5 x" A* K' a& 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。tvb now,tvbnow,bttvb; S: |/ B: r1 T$ z; y& i8 |9 U) d
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