本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇( s# q9 i3 L* I0 J! H1 o( [
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If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇% s+ K" b' @1 a( K( q% _6 m" Y7 s
AMAZING! 5.39.217.760 p6 x3 N" q, @. P4 p/ X4 S" \5 v
+ U H9 B8 s) u1 \; ?# j: Y! j0 T1 ctvb now,tvbnow,bttvbEven 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! tvb now,tvbnow,bttvb: p& h. N6 e3 X; y
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
" S% Y' f3 h! ^2 R" g/ ]It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.5.39.217.76( {. ?& J3 E% J S
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb8 f' D f6 U k2 x) ~# N B8 r8 V
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇1 `6 l% U) a! {6 W4 x f5 U2 t1 g
Or just the weight of the water?
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/ Z! p% @1 }& vAnswer: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。( N) Q0 S- _3 A9 B; U
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It only needs to be designed to withstand the weight of the water!
O0 i3 P0 Z& `/ xWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded9 x/ p7 Z3 L" E7 M1 f) q2 R9 Y
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2 R8 t( t$ }5 w. B) |The Incredible Magdeburg Water Bridge in Germany
# g+ F; c0 Q. [. E9 O7 H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.
( d- k4 P' w2 t5 P/ Gtvb now,tvbnow,bttvbThe 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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, a1 _# ?0 e! p5 Y* ]1 rtvb now,tvbnow,bttvbConstruction 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. 5 C* c& r# M, N, \8 _7 w( o
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! P9 {$ Z& Z* c# [( Ktvb now,tvbnow,bttvbTVBNOW 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。" E5 X% t \' y1 K2 y
- a/ W. Q% a& q% U. R: M. h( \) X6 n6 dTVBNOW 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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