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. 公仔箱論壇3 F8 z8 }7 N4 l$ T9 A- ?
AMAZING!
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6 O8 `9 Q8 N( \" ?5.39.217.77Even after you see it, it is still hard to believe!" n- V) `' x6 ~3 Z+ I
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
4 o& E, i; U/ Z; `0 G% stvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 1 {( l8 B# p+ H% n7 `- [4 ]5 |
It is located in the city of Magdeburg, near Berlin.
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4 G- O0 v7 f4 a0 C0 Q8 M4 atvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
3 V) x/ G$ S3 I2 j3 S1 p3 {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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.2 [, y; {( A! u- f- [) o4 V
9 }$ {. c! ]- UTVBNOW 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。Question:
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+ q& |0 F; F( l5 T& E( B9 a7 SDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
7 U$ p5 ]3 Y1 kOr just the weight of the water? 5 B/ I# I" s0 W7 j; e
8 B. A3 Y& `/ L3 vtvb now,tvbnow,bttvbAnswer:
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7 J" G ? Z+ o4 N6 o, o5.39.217.77It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb5 P* m* o Z, f- D- S3 N9 K4 s9 d
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 Germanytvb now,tvbnow,bttvb0 Y; s: K5 B- q. S: |# [4 ]
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。; V3 [, {5 L7 T* q. c) Q% @' t7 Y
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. tvb now,tvbnow,bttvb8 T6 Q7 f& }- }' B: `( }
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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. 公仔箱論壇0 j0 @( P% V, ~, A7 \4 ?& c
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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。9 N6 H9 P' A. f0 x, ?) s, ]
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