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 3 U* V( P& Y/ M: j8 r, T0 `- B公仔箱論壇$ G' c: E |6 m0 c/ b, _7 x
If you are not a Physics person, read on and learn a fact of physics. $ s9 t5 o/ Q2 V5 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。AMAZING! - }% }, T0 e* M ) N4 E s& _6 b' c5.39.217.77:8898Even after you see it, it is still hard to believe! $ Q* w0 b7 p& w* m1 q) L[attach]1486499[/attach] + ~: y4 I, K+ h7 b& d# UTVBNOW 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。tvb now,tvbnow,bttvb. F+ m; l- o8 Y+ O* {
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 4 c( e9 H" x- E3 P# @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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. . Z, ]+ F, R* j6 E% _ J
It is located in the city of Magdeburg, near Berlin. 8 K* O# c+ ]3 Q1 Y, Z5.39.217.77:8898 Z$ Y$ @: [7 n
The photo was taken on the day of inauguration. , n6 A( B8 p% ]: |( D9 w' R5.39.217.77:8898To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.0 _! N$ \- _- e: T, w/ C
6 K8 {& s: X$ h: `1 F; w* t" H公仔箱論壇Question:tvb now,tvbnow,bttvb" X- J7 |( f! d/ Q1 o( j& e. }* Z
5.39.217.77:8898 R$ e L$ C3 W' c
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, : L# m E& u' y4 [( 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。Or just the weight of the water? ; M2 }8 Y0 T# d% o1 e( X8 k9 z
; @7 Q7 Q$ G% m/ u! J* [+ K2 l/ vAnswer:5.39.217.77:8898) y4 B, e0 }/ @: w- J
5.39.217.77:88987 _" M4 [& u; P
It only needs to be designed to withstand the weight of the water! 公仔箱論壇8 ^. Y) C( w" `; D8 g! d
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 p& k/ `$ T( F& N公仔箱論壇4 b- G: N, j. Q
/ v/ T: s+ Y6 q9 O' W6 T公仔箱論壇The Incredible Magdeburg Water Bridge in Germany/ @0 M: N' V- M: n, @7 V
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. - h: T" k4 Y+ i8 h4 itvb 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. , `6 p. z2 v6 z$ w: J& j- F8 ]6 e公仔箱論壇5.39.217.77:8898) z1 [2 Z9 L) m2 `; X- B m
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. 1 U( |2 k7 S' B8 w, E9 xtvb now,tvbnow,bttvb' I1 `8 E( r/ Q4 f' e. C) O2 N6 `8 H
公仔箱論壇' q$ u& v7 I9 v/ }& w. g+ j; z9 e [attach]1486500[/attach]公仔箱論壇, j3 G/ F7 |3 |/ `+ ] [attach]1486501[/attach] 3 U& j4 |% S! u1 W0 B& [+ J& v5.39.217.77:8898[attach]1486502[/attach]tvb now,tvbnow,bttvb! @ g3 E/ f* p" X- k! m: ] [attach]1486503[/attach]公仔箱論壇& B# m# @3 a5 @, n# y [attach]1486504[/attach] " P& g( ?' d+ J5 I% w4 ?公仔箱論壇[attach]1486505[/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 i5 Q9 u; c3 y: D0 S8 u! S
公仔箱論壇8 E: W- @' f1 l/ \; k$ s1 X+ E 作者: busyfun 時間: 2011-10-4 11:33 AM
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) K' @# z9 Q8 l, y