本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇! ~7 K" h( D- i$ H4 O
. F( S7 j- M! ~7 Y( W. }8 g$ D; aIf you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇- |5 e5 B- E A! [# g2 v! O0 d
AMAZING! 1 k. L( G; E* \3 x$ { b2 C
. Y3 ^4 c; G# C% S% t$ M+ N eEven 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。- H' C8 M) f% P% B) m; G6 I6 D& m
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# K. s- |" O5 d0 S, d: z; g$ wTVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
/ J! t; X7 o* @, B" {3 {3 f+ z' Jtvboxnow.comThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. * @/ B2 |+ u0 }
It is located in the city of Magdeburg, near Berlin.
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0 f9 W1 Y5 I+ a- ~1 ]- QThe photo was taken on the day of inauguration.
5 v/ e" W* t3 T' ]$ U n! V% cTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.2 Q7 z6 x$ X* I* @, D; E3 t6 X
+ m7 v! {7 P" E) rtvboxnow.comQuestion:) _ F4 U8 V6 T
7 K2 r" m- R3 [4 ?" kDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,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 K, i3 y8 ?! R
Or just the weight of the water?
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- d" m' H9 N8 |* m8 ` }9 A5 utvboxnow.comAnswer:
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3 t! N! [) p9 Q: e1 t1 j4 ^# DIt only needs to be designed to withstand the weight of the water! 公仔箱論壇. A" n5 {3 B1 y. O8 J! i
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded4 W2 X; x! h0 @7 o9 b8 p* D! A
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: f) p, L' {% h1 {3 K" M6 N0 \tvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany
$ `. n% @: s: M8 x3 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。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.
% r' Z1 z% G9 B, z. Etvb 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. tvb now,tvbnow,bttvb T, G2 F% `' N+ {" H; r
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。) l8 [- g' i; q# b+ N
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.
* t' x: V9 x/ Z* Z! e7 m$ 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。% ?! i& A$ a L: x" o3 m) l
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^0 M0 R" [) C6 c& J+ ATVBNOW 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。
' _8 ?, T3 {' ]公仔箱論壇7 `8 A6 D& u; d/ K# L
/ \( e% B; e/ _1 x* T) ^( U! C5 A1 T ~公仔箱論壇
6 c3 c. j% g2 i, g% utvb now,tvbnow,bttvb
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