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 4 C7 c! f, W8 Y, y0 c! t1 @ Z9 V8 M / u' a. \3 i4 P, R& k; cIf you are not a Physics person, read on and learn a fact of physics. 0 d( {/ P+ B; L8 i3 f7 H: d* p公仔箱論壇AMAZING! 2 Z$ ^7 L; R2 g2 y. ^0 E& w# 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。: b$ _( g2 B7 j" M0 N3 P2 u
Even after you see it, it is still hard to believe!# j" t; V- j$ K [attach]1486499[/attach]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。6 V6 k5 h: C* O0 E' h2 }) A
2 I, a; O( Z" TMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb: \% ?% R. H1 _. z4 c E
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. * v" [" v/ x- u/ M; w
It is located in the city of Magdeburg, near Berlin. , X( Z8 b" B# E5.39.217.77:8898TVBNOW 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。) A7 k: q4 @4 G6 d m. j' A P) j
The photo was taken on the day of inauguration.公仔箱論壇& f0 [0 O0 I7 J; K: K2 V( q
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇6 @' J5 {" i' F" x) H
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Question: % q3 s) a! s% Z- V/ l2 @7 R+ tTVBNOW 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。公仔箱論壇& n( Y6 x) k1 t% b8 T n7 Q$ z5 f
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, 0 _( q/ I8 U }: t4 utvb now,tvbnow,bttvbOr just the weight of the water? 9 I; A. }% i: F8 F/ Y7 I# 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。" L" @! ?- L6 k- F
Answer: 9 q# e. [5 ~# ^8 o6 j; c' kTVBNOW 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。 " d$ t- T" `8 r6 p( JTVBNOW 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! 5.39.217.77:8898, E+ ~0 b0 L$ ~
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 : p1 r" ]& d" P$ Atvb now,tvbnow,bttvb , H* q# m" \# r l; u5.39.217.77:8898公仔箱論壇2 d. J6 Z2 K; g The Incredible Magdeburg Water Bridge in Germany公仔箱論壇& f) a; D* V) J) n9 |
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. 9 M I; E M2 [( `6 |7 `" h公仔箱論壇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. 7 p* ]( V7 I7 ~; z- } Q公仔箱論壇 3 v( a, E( p4 etvb 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. 公仔箱論壇0 f9 C6 c! E/ a9 W: |
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。' C" ^2 L; ?. {: P9 T
! T& R7 T! t F* I1 i+ E [attach]1486500[/attach]5 u3 i% s; W4 Y/ r [attach]1486501[/attach]tvb now,tvbnow,bttvb, g' `1 ?. K* L6 o; [ [attach]1486502[/attach]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/ ~. i& ?% K0 i6 J N% I4 o& i [attach]1486503[/attach] ( \' W/ X: F& t; a4 i8 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。[attach]1486504[/attach] 1 m4 K+ [+ m2 {! P6 W, K3 Q! `! B4 FTVBNOW 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。[attach]1486505[/attach]2 f1 {6 L B& i/ n! Y3 C
tvb now,tvbnow,bttvb- K9 f9 A1 u& J$ W6 Q1 I2 Q( P