本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 % a4 ^0 L# X! ~! K8 S
& i( i/ F2 q2 e5 f8 b) x公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb& _6 X9 R s) @3 Q; B
AMAZING! 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。- Q% c: C2 n0 s. q+ x
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Even after you see it, it is still hard to believe!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 ~6 u3 C5 i$ W# F6 I! E
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。3 p" J. y6 C$ f0 l& J2 z H9 P
2 ]1 [- }* V8 Q& x3 x; `+ ?/ |6 UMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.77:8898* H& q8 h. j( x' Z. F) u' e! u1 V# p
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.77:88980 N1 r9 K2 R' `5 ?
It is located in the city of Magdeburg, near Berlin.
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1 A- g, k% N% y. O: s+ n/ S2 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。The photo was taken on the day of inauguration.
5 [* r6 V; e" m; U公仔箱論壇To 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。5 j, ~; U1 l0 v( V; |. L
; o5 X' F1 n$ `" c. F" E公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.77:8898; l" X* N0 u+ } N% m
Or just the weight of the water?
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Answer:
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9 h3 w+ [9 y( G6 `. V9 U+ Z$ K7 Q& \tvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! 公仔箱論壇% _$ \) ^$ K: F2 O3 L
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.77:8898+ {3 I b* S) { f
" e8 A& z# j- LTVBNOW 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。! `: x6 q+ Z' `# X8 C' ^3 h; A
The Incredible Magdeburg Water Bridge in Germany公仔箱論壇/ r" I, k: ]) e M: Q* E
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.5.39.217.77:88989 `; G/ z7 L+ }! @1 j+ R
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.
* h) h1 g: O8 }& d9 rTVBNOW 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 Q4 t6 r# _; v. Q& v公仔箱論壇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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: ]6 ?( @" L! `9 Z. j4 a F( I5 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。7 i# ?& p% T/ ]' r5 [
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。! i; o# u+ ~# s2 k/ Z/ q5 J
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