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 ' i+ V7 @3 k1 M. F
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If you are not a Physics person, read on and learn a fact of physics. / Y" P6 [; u$ _/ T
AMAZING! 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 W9 U4 k( j$ l ( r" B5 q1 m/ I6 e1 ltvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!5.39.217.77:8898% n. R. @5 A/ q0 l [attach]1486499[/attach] $ Y \$ Y- f0 t" }, Y8 E5.39.217.77:8898 # x$ Z) A4 V0 M7 zMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb: t* r8 {; T9 j+ x2 b& Q J7 S0 ]
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 0 T( C' z% C' @% u8 ltvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.公仔箱論壇 t; U J& i2 o! t" o
! Y# f8 w0 l/ _4 XThe photo was taken on the day of inauguration.5.39.217.77:8898' c6 }5 }+ { n) Y5 }# H, J: @, P
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5 e& J* ~- o/ U
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Question: 4 |: S4 ]) {7 y* C公仔箱論壇 ; h7 e( W v6 W5.39.217.77:8898Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, 6 o9 g. Z) O9 K" M& l0 MTVBNOW 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。Or just the weight of the water? 5 I; W3 m2 }" _& W4 E5 L公仔箱論壇% X: H O* P* A. H* u/ C
Answer: 5 t$ w- |3 x0 cTVBNOW 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。 2 r9 y7 l( _7 l/ ?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。It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb; v. u- V/ \+ Q. h2 F$ x
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! V$ ^5 _/ [. u : P2 H; I g7 d5 K5 b
) f( R3 x' M; X2 R* gThe Incredible Magdeburg Water Bridge in Germany - l3 |0 ?4 l! M$ v# N% c公仔箱論壇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. % j. E1 w. C4 h8 WThe 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. , S- W' C# O4 ]7 g5.39.217.77:8898tvb now,tvbnow,bttvb; ]9 ~4 O/ u3 m s
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. 9 O+ o8 z% ?8 v) Q
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$ m( Q8 |: { u, ~% I6 j, [& _5.39.217.77:8898[attach]1486500[/attach]5.39.217.77:88984 l# W) {/ _1 t2 x3 q2 S7 l0 P0 d7 r [attach]1486501[/attach] 5 ^6 d. l' A- N! rtvb now,tvbnow,bttvb[attach]1486502[/attach]' s% v. m5 b" H/ A [attach]1486503[/attach] / h/ L$ O! H+ p+ I M8 j5.39.217.77:8898[attach]1486504[/attach] , X6 n0 L8 W# O' V$ i- e[attach]1486505[/attach] + ]% W( @1 a( e8 R' u$ e) etvb now,tvbnow,bttvb4 A! P6 j" v$ \) L 作者: busyfun 時間: 2011-10-4 11:33 AM
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