本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。: B3 Z2 G2 o" l
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If you are not a Physics person, read on and learn a fact of physics.
! h4 D) U# B7 y7 A, ~9 QAMAZING! 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。0 _7 N3 h% H1 h) Y
! k! _# t8 \# Gtvb now,tvbnow,bttvbEven 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。& Q6 g1 ?7 b+ {
: \* i7 B; ]; s9 P' w7 PTVBNOW 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。5.39.217.760 u8 R$ H; R% _* I$ M* x
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb( m" I& B, M5 p8 l5 l4 u) `/ k b
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
& W7 S' R$ A4 x( bIt is located in the city of Magdeburg, near Berlin.
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1 r& X: I$ V5 m8 @- @公仔箱論壇The photo was taken on the day of inauguration.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。/ S1 M3 N% A( t6 s' a4 V
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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0 n+ s( m0 v& f/ \; ODid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.76) h* x& ]/ Y5 k
Or just the weight of the water? 3 _' Q. g, u! r: I, E- }
0 y9 Z5 h e; Ztvb now,tvbnow,bttvbAnswer:tvb now,tvbnow,bttvb( d( y/ E8 o' H9 E9 x$ T9 G
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It only needs to be designed to withstand the weight of the water! 3 J- F* J x/ Z7 N
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded9 K% @" S8 A1 ]1 c V: L
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, O! t9 D+ _: m3 N9 \公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
. r% f# a0 w* u1 kThe 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.公仔箱論壇0 l1 E( H/ Q$ |9 B
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.
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" x$ _' F! L$ Atvb 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.
" d( x7 E0 k& u VTVBNOW 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。
! _ I! ?( G- Q* Q) H( t4 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。 V$ I) x0 y8 Q0 y/ B
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