標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁] 作者: lilitan008 時間: 2011-10-2 10:09 PM 標題: EVER SEEN A RIVER OVER A RIVER?
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。- c6 d2 H( k0 ^$ {5 }
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If you are not a Physics person, read on and learn a fact of physics. 8 u) e8 {, n/ ytvb now,tvbnow,bttvbAMAZING! 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。7 f, l* H0 g' ?3 z" \ W; n2 l% r+ M6 d 8 u! s$ X/ K0 T4 l6 P
Even after you see it, it is still hard to believe! 0 @6 M+ f- V1 w% M* N" H; c9 ^. o5.39.217.77:8898[attach]1486499[/attach] q7 D- _+ d, O m4 a% m9 L6 Qtvb now,tvbnow,bttvbtvb now,tvbnow,bttvb: h" T+ S3 }4 h8 ^- G @
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb3 I- ]2 A( _# _+ d
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 6 p2 M. x; R5 u- c公仔箱論壇It is located in the city of Magdeburg, near Berlin.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 L* m: f) q( V0 F/ j3 ~
6 Z8 q6 s7 H# I& R2 Y公仔箱論壇The photo was taken on the day of inauguration.公仔箱論壇4 Z! V9 u- e- p
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb9 F/ P) {+ z% Q& W0 c
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 \- F" `5 n0 k; x# u
Question:& b, E: J U; F% n" d/ t2 K
& e4 E, o4 J8 ]/ stvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb5 c' B$ ~0 B R* d5 j: W: n
Or just the weight of the water? 公仔箱論壇. C4 C0 G) ^4 }1 { z: B V- L
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Answer:5.39.217.77:8898 X6 P% y; N1 M; z
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It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb9 I$ h$ B3 J7 j# M2 b' e
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 , I: D% m- N( y* x$ o; p- x. j7 k5 ctvb now,tvbnow,bttvb: j: ^/ Z; c! J- M
5 M9 K. ]1 R9 g公仔箱論壇The Incredible Magdeburg Water Bridge in Germany4 T- h0 M1 {- X3 X
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。+ K; o9 N d4 u' D
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. , L+ J7 k" _& m% ~
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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. 5.39.217.77:88986 Q6 o$ a: I2 T3 v0 Y4 a7 X
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