本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 7 P1 J0 n) @+ @& A& ^# Z5 r S& E
: A/ F/ J* {& c5 q6 e' xtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
5 J3 d7 b6 C3 y- u. [+ 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。AMAZING! 5.39.217.76% @$ C. _* j0 U, N5 f0 ]* v" x- B
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。& Y0 o, l. {3 a
Even after you see it, it is still hard to believe!
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0 o" w( ~% T/ N" X( D2 }5.39.217.76Magdeburg 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。5 x' k0 P( F) O2 O. G
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.76: m. ^" O, C8 ]" ]
It is located in the city of Magdeburg, near Berlin.
% i* ~/ l4 v1 `+ ^, w5 \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。
$ Z9 G0 W: `; d9 k( e1 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。The photo was taken on the day of inauguration.
+ a( ?* c2 n4 B# YTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76) t' d, _ D4 A; [
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Question:
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9 l7 J* ~/ D0 p, ]# e4 TDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb, R7 u. \$ c) c5 ?3 s- { T& x5 n
Or just the weight of the water?
: o& |0 C9 \, X' w5 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。
: m0 y* [$ D" u( h! v5.39.217.76Answer:
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; G9 j& `& K* N1 ?4 P! VIt only needs to be designed to withstand the weight of the water!
5 ^/ s8 X% Q5 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。Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。0 F- r/ r4 ` x
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The Incredible Magdeburg Water Bridge in Germany
3 S$ n1 L+ p; G( k公仔箱論壇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.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。2 t3 t; t* S p1 Y7 g& _
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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3 g/ c! O( Z9 o; ~$ MConstruction 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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0 M8 O, x8 g, 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。5.39.217.76$ S C7 }, Y/ x( U
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4 n; t. o$ A! H6 P! H/ ]3 ]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。' I4 k# ~, A' N) _6 L0 j9 e, v7 q$ e
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