本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 1 L$ J/ w, t! x" q
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If you are not a Physics person, read on and learn a fact of physics.
. V# R& |6 p, }$ g! hTVBNOW 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!
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Even after you see it, it is still hard to believe!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。& l' i, @' ^+ S
" P6 I# a; w9 P( V, |7 S4 oTVBNOW 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。! j' U3 T0 ?# l+ Z2 V
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
) p( z; p4 y; j9 m/ ` T公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
; X4 E. r6 H% S7 o( H2 x7 ktvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin./ L G, K( S/ c; l& e( J
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The photo was taken on the day of inauguration.
8 B/ z- \2 x3 \' P$ ^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.tvb now,tvbnow,bttvb: K: D D# l5 V) [0 [5 V# |" Y$ f
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Question:! N" C6 h( r Z/ C
% d6 t/ y9 u {' k( R2 aDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
/ q8 Q5 C+ _' F* Q) C: L( ?Or just the weight of the water?
7 m/ s7 W# T! R2 `: _4 y0 ^: u公仔箱論壇
8 v1 ~4 A3 l, }: Q. m/ XAnswer:
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It only needs to be designed to withstand the weight of the water!
: D! l* V1 k6 Y' XWhy? 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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. ]" e5 q) `$ z8 H! F8 zTVBNOW 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 Incredible Magdeburg Water Bridge in Germany
3 X- h, A6 o/ c3 \' Q& @1 a3 z" btvb now,tvbnow,bttvbThe 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.
2 \% d- ^$ X, ^% c2 ]" B1 A( g: M. xThe 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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* q9 R. |. V$ ]+ z* A5 C7 B3 c ]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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7 b! w2 N' d$ OTVBNOW 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。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。: i7 u$ b8 F$ Z" n* l
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