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 8 w: V5 H( k9 B. H" [0 G公仔箱論壇www3.tvboxnow.com; d2 H6 C# @/ K4 h$ k, B' d5 ~
If you are not a Physics person, read on and learn a fact of physics. * a/ V* D+ r5 a9 \5 R! G
AMAZING! 8 w# @, s: Q" Z$ l: ~) b* I# gTVBNOW 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 ^& g7 q) b7 {公仔箱論壇Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb/ Q' ^+ ^0 z5 V' B% J' x9 ~# q, @ [attach]1486499[/attach] " v1 G$ T, ^: K1 A7 U; X1 W7 H1 x( Q2 Z5 \/ Y
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ! A) ^/ O- Q/ C/ ewww3.tvboxnow.comThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 3 d7 z; S4 F* O7 ktvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin. ) r k) p! {: B- j* R, }2 ptvb now,tvbnow,bttvb/ C$ Y- A# u# H4 l$ o# W
The photo was taken on the day of inauguration. 7 L8 x7 K. U) X" ~tvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.; r* e$ m2 M5 P4 {
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Question:2 G; y- D& w+ T( ~
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, - k% u; Y( @# O1 `* X& \8 h7 dtvb now,tvbnow,bttvbOr just the weight of the water? www3.tvboxnow.com8 w/ W, [8 D* k R+ }* L% Z, ?9 B* j
) f3 p7 q; S Q. Q( BTVBNOW 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。Answer: / m: T# l6 P L4 ]! j$ P公仔箱論壇0 f! T4 U! H4 ^4 B8 S# A2 N9 W$ R. ?- I
It only needs to be designed to withstand the weight of the water! 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( Y0 c X, o* | K" ?: R
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 ! p6 |% |) T) A! B3 H% {www3.tvboxnow.com - D: [5 j4 m. ?: N2 |0 k" e3 m8 s; E3 j% D- r5 x$ ?4 f% t The Incredible Magdeburg Water Bridge in Germany ! ^! H- |" |& i8 c5 B0 ktvb 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.: r# N0 R7 s0 M3 G, |7 @
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. 9 @% t- g# E% z$ Y0 j 8 z0 v1 s& h$ w) J6 l" }( p4 hwww3.tvboxnow.comConstruction 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. tvb now,tvbnow,bttvb8 x" |5 L+ v, c) }, O% G2 V
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