本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 9 u1 Q2 d! ]9 S. w
& U3 m( x# m/ vtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!5.39.217.76 ^- |1 ~9 I% K' F h
9 d. p* T: a* C4 L, ATVBNOW 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。5.39.217.766 u; W: x0 }- I. [! O
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
8 @4 D. r% r9 k6 c: ~& k2 T6 M2 d. E5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 6 r0 S& t5 S+ X" o
It is located in the city of Magdeburg, near Berlin.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。& v5 I. W, k4 t! Z
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The photo was taken on the day of inauguration.5.39.217.769 v j/ y6 E8 g5 \5 k8 T8 F5 i
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76* w- S, C+ g+ m' @
: f; Y% N+ Y- K9 X) U3 S. f公仔箱論壇Question:6 Z/ \! U7 [- i" [! F
公仔箱論壇5 E( _; w x) B9 p( G
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb) N0 s7 @! B3 W; }
Or just the weight of the water?
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5 R/ b! G3 o( ?5 l3 t4 T5.39.217.76Answer:5.39.217.76- u) X( u; ]0 I# {
+ i- A9 I% N3 b& E$ h3 L公仔箱論壇It only needs to be designed to withstand the weight of the water! 5.39.217.76 t# @; B( l, ?- y/ ~ y
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' f; S5 u& @/ n* T. z
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.
. B5 h7 n6 m( B* u8 _* Q5.39.217.76The 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. 2 [) |& N# v( y) z3 p7 G! d" E
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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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8 b! }9 F) q) ^# G5 g1 J$ A. wtvb now,tvbnow,bttvb公仔箱論壇$ C* J v. a6 g/ T3 o* }6 ^: u
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。1 T4 u4 t) y4 e U; \
tvb now,tvbnow,bttvb' g1 {* y2 Z# G0 Y ~3 D
, b+ ]9 s6 @+ h" W- r. p' Q) y5.39.217.76+ g" K( E8 d9 I( e# S' h1 y2 ?5 t
' S; _* q9 x' [+ Q7 \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。
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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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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。, ^3 }( W4 K; e$ z+ `, z8 Q
發表於 2011-10-15 09:35 PM
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