本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 # |9 [7 B& o; O' W. R; L
: y/ E L v& m8 v" t( y$ @ 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。If you are not a Physics person, read on and learn a fact of physics. + i5 p& j! _" m& U( [* D0 ?( }& _' R7 o
AMAZING!
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Even after you see it, it is still hard to believe!9 e7 [( F8 n# c/ c1 T
1 v3 _0 u4 B; ]6 q' c) }; _& j1 utvb 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。7 I1 T5 W9 H2 H# S6 [
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 B2 E Q) a: P+ f' U* w
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ) ]* I( _7 l# ?0 u- P% A
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb+ m& M0 k+ l3 q9 S+ w7 p* W
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The photo was taken on the day of inauguration.
6 K4 {* E9 x) N9 l6 jtvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:tvb now,tvbnow,bttvb! B% u' y& U+ T7 @1 q) ^, P
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, S! Y/ P4 Q3 X m' [8 G
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇/ t/ G* x2 Y4 o* P8 K/ m
Or just the weight of the water? tvb now,tvbnow,bttvb( _; j* I: `( H4 e% u$ c+ L2 g
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。; g4 a; Q& h$ f
Answer:公仔箱論壇( S- k- Z6 f: N& w) u4 m4 M
6 G( ]9 ]- I6 V4 K, ?It only needs to be designed to withstand the weight of the water!
5 j7 [1 ~- Q' R, Y# A! N5 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。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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1 Q8 R7 {0 j% W* Z; a2 d Z公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
/ c- P" `& H b8 W6 k: d5.39.217.76The 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.
! M* |6 x% K+ h+ h5.39.217.76The 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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) \6 `, [9 M, P- f9 Z0 _4 _( Mtvb now,tvbnow,bttvbConstruction 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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4 `/ M v. r$ L5 {8 ^* D5.39.217.76TVBNOW 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。% B' ^# V, O7 O( M- t' j7 _
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