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. tvb now,tvbnow,bttvb( o% e9 e# Y9 O2 p
AMAZING! 5.39.217.76! S/ A: Y" o. {2 m
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Even after you see it, it is still hard to believe!
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: E! C1 O8 o5 ?( i0 i3 }5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! & `2 K1 l" B- @- r
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
5 r( q9 A- H, H+ b7 M* W: k3 TIt is located in the city of Magdeburg, near Berlin.0 p4 P8 S0 G) w8 V: T
( ?8 B* E# [+ d9 u$ o5.39.217.76The photo was taken on the day of inauguration.公仔箱論壇% \, n7 l0 I! V6 \- @& ^
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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2 m/ k- Q5 W3 s2 N, }# eQuestion:0 v$ F# o4 c1 ]/ F' e/ e1 d8 G" a
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.764 u0 w2 Q2 x i! m/ G( x8 u+ R
Or just the weight of the water?
, _0 n( z2 U0 i. _/ w! y iTVBNOW 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; e. z( R+ O( i
Answer:
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It only needs to be designed to withstand the weight of the water! ) |4 c3 b2 |: Q' B' ]; v5 V
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& c9 S; p- e( _- L, A
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The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb2 ]. d! n" {' ?, C* i8 X
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. s/ N, {, F. G; |( L9 n
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. 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 K3 @& E6 j7 i9 ?6 W. R
$ `1 ]/ q8 c! \6 FTVBNOW 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。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. tvb now,tvbnow,bttvb' [! H4 }/ |; W% b5 A2 o3 h
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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。7 T/ S, }! s/ S5 w: f4 v0 P) z
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