本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。) a( P8 P" }8 w) E) P8 ~6 v& H9 K
' F: ~0 U- r$ Y公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. 8 J* K) g0 c- ~ H' u5 u
AMAZING! tvb now,tvbnow,bttvb* N) S5 {( ?9 d2 S N: U8 S
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Even after you see it, it is still hard to believe!
5 x) O8 {, C% T8 `! m n+ ^( f5.39.217.76TVBNOW 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。5 ~/ K6 [, z5 ?8 Q/ \8 V, D
7 j. l3 \+ ?! L/ ^1 C% L& p5 Btvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
- s) l" B8 s6 h! @7 n; f7 a5 _, }( SThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
% V1 G* ]5 \9 }7 N3 uTVBNOW 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 is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
% ~! h8 n8 x6 |" ?8 {0 D公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76& P; v( z! ~# f% v" Q, }
" _& F% P8 z6 Z. T5.39.217.76Question:tvb now,tvbnow,bttvb( X+ _3 ^3 j( M& R
$ S% p5 {: J; E8 |0 D- QTVBNOW 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,' _3 l; ^& e! {. G
Or just the weight of the water? $ B) K- Q$ C/ Z) y/ \ C
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Answer:
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; j7 Y0 l) M$ y* U( G6 b9 l4 Q1 Ftvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb. e8 @, B; s4 S2 z, t' }$ v) K* B
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
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The Incredible Magdeburg Water Bridge in Germany
1 e* D8 g* p$ B# x+ u) K7 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。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& C# O7 @; H/ w* Z1 G5 t3 [8 d
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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" Z( w, I: y( Z( {* _: |8 O* hTVBNOW 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。, y& R1 I- E# Z! y: h7 ^! j7 b
tvb now,tvbnow,bttvb1 e; k) Q/ ^, e# X8 t
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4 R. T/ C$ ~6 j! ?2 v$ 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。 |
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