本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76- }3 g q& Y- B+ u
, i/ M5 `! P' C) ETVBNOW 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。If you are not a Physics person, read on and learn a fact of physics. 3 A& A9 L7 }5 M6 J6 i( x, u8 `
AMAZING!
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7 G; B ?- e6 |$ q) _8 u( 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。Even after you see it, it is still hard to believe!
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4 d9 c3 L* y) j5 T9 n" 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。; `& r2 A/ S. S! g
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇- p3 J1 c/ n& r; u
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
4 I( ^6 `* I) H% M* P% K) f% wtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
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0 Y3 g0 F9 K( u5 o- |- wThe 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。/ [% }6 S* u3 b0 i/ M$ G
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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3 V5 j5 d% Y" }Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! w# d6 h0 ?4 c8 }$ m: Atvb now,tvbnow,bttvbOr just the weight of the water? , v0 w3 }- _* |! p v9 S
' L8 O O$ N% H- H, w/ @" P" B5 M2 @Answer:
; F" T& L; l7 z1 w5 |公仔箱論壇% @ ?$ h5 |0 G$ Q
It only needs to be designed to withstand the weight of the water!
+ A, J3 e# @& x公仔箱論壇Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb9 s& h, }0 L* e' e* s
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# x4 b: j6 M HThe Incredible Magdeburg Water Bridge in Germany
: g; z$ j1 d" A' {0 Ltvb now,tvbnow,bttvbThe 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.
s( k' j& x( _( v. d' a( \/ wThe 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. 4 y i+ W! M4 C& X4 w
3 J9 b5 { q. N( wTVBNOW 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 `9 h9 g' Z
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。* p7 }6 k6 N% N, l2 `9 P
/ F4 ^8 m6 I' d1 V5.39.217.76公仔箱論壇5 Q* Z4 [" q) m6 e- ^) T0 I
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