本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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( y5 O1 s5 L, I5 P7 k0 eIf 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。: u; [2 t( l- Q' M- Y" d
AMAZING! 5.39.217.77:8898; t" B5 `+ ~+ n4 a4 T
& X# f) N" D2 p7 d5.39.217.77:8898Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。: f" B# j z" K: O9 h
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇* Q5 M2 d; c# Y( S' [% Q! g, N- G
It is located in the city of Magdeburg, near Berlin.
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$ ?# j* S: @1 Q! etvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.公仔箱論壇. O$ W) G, w! N% u# K8 M0 G" M2 N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.77:8898% i# O, K! ]7 O, a) M4 o
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Question:
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{% E* b8 b$ TTVBNOW 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,公仔箱論壇* [2 M3 |+ f3 \, o- }. P
Or just the weight of the water?
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7 B9 G. }8 U6 A1 ~公仔箱論壇Answer:公仔箱論壇+ J M& l. `6 n* W
, }# C9 t1 g R _; UIt only needs to be designed to withstand the weight of the water! 公仔箱論壇9 S7 M' O+ y& S
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. `1 o* s6 o) o8 a# ~8 t. n
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The Incredible Magdeburg Water Bridge in Germany
( R& ]. G5 A0 `- e7 J: NTVBNOW 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.
( H6 B3 h) [ i; {- c! N5 U, rThe 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 u. r+ A, t3 A4 o8 K5.39.217.77:8898Construction 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. 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。, ]) G" |6 x4 {1 H1 p4 h6 }
" r/ c( i$ B: W" GTVBNOW 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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