本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics. 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。) r7 |5 D' ]- o+ i; K8 M. X
AMAZING! 8 b- Y. n7 b/ P
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Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb) H3 k/ `" e" T% K" t" F8 W
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& g8 {# N7 `$ o9 R
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
' r1 U- T5 t- T b公仔箱論壇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,bttvb% U- M; @) w/ J# P( D# L# N0 T( i
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
2 X0 e8 J6 O' I0 XTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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. I1 X( R* W; S5 J1 n) K" k: y5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb8 \7 Q3 U8 v* h- X2 M5 i
Or just the weight of the water?
# \/ G( |- I- b2 v- W. {/ M1 w* bTVBNOW 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。
" y8 j+ q0 M' `% Q$ v, itvb now,tvbnow,bttvbAnswer:
, I5 {) K6 i) A2 e/ r/ v# }) p5.39.217.76
' y2 V$ _( M1 @7 G0 ~: 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。It only needs to be designed to withstand the weight of the water!
2 |! P, U4 u/ B2 L0 x: v8 U5.39.217.76Why? 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
: V5 ? }: V& Q- p; [3 mThe 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.
$ C/ S/ N$ A8 ?- c i' z$ ZTVBNOW 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 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. $ R" ~1 S9 m- h2 D
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