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 / [$ p# z" f8 w+ F& h9 O$ k- G公仔箱論壇- E0 _, N" Y; y3 [
If you are not a Physics person, read on and learn a fact of physics. 2 a8 e$ Y1 p l$ v* x" |) N2 ]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。AMAZING! ) b% S( r# V$ w: q! i公仔箱論壇 $ z# A% A5 Z+ n( r& y9 e/ F公仔箱論壇Even after you see it, it is still hard to believe! 2 U# w# ?# i" b! K8 c% m公仔箱論壇[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。) q7 l# v" m2 c7 v% V, e8 Q
: P5 t5 m+ G/ H+ B+ w公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! # L* Y/ F% v9 O) t; Z( V( Rtvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. d5 L: P; y" e公仔箱論壇It is located in the city of Magdeburg, near Berlin.公仔箱論壇3 o/ g0 R6 x+ `& e2 W4 G% |4 S
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The photo was taken on the day of inauguration. ; z" n. O: F: J- Q. W; A4 `2 e$ m2 K5 nTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇. e1 Y y- x u- w+ y- @
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Question: , U( K$ o4 G/ q3 K. m, Stvb now,tvbnow,bttvbTVBNOW 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 m# F9 s _" y) @
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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$ x+ J4 G9 M' H2 I; e
Or just the weight of the water? + z8 {' K! l& i. b# h3 F9 x& ^
; ~5 ]3 d$ @3 Q5 i, Stvb now,tvbnow,bttvbAnswer:5 t+ W# _' p: X' b$ ~' i1 C$ \
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It only needs to be designed to withstand the weight of the water! ' n0 H4 t9 u1 } q' Awww2.tvboxnow.comWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded 0 `3 Y$ M3 o; V( z4 Bwww2.tvboxnow.com / N4 E, l0 A q' B7 s9 y$ P8 \( m; O V+ m% c The Incredible Magdeburg Water Bridge in Germany 6 g7 Y: E) v9 ]$ g" P) e0 F; n# stvb 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. 0 K" Z8 w% ]7 SThe 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. 公仔箱論壇" U) k# \# f3 B% G
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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. 公仔箱論壇( m* q: T( x9 _7 u: X( p
4 q4 [% b& z9 b/ {tvb now,tvbnow,bttvb 2 |1 Z t( r+ |3 Y* ?. b公仔箱論壇[attach]1486500[/attach] 9 h' M, M. q* Z7 _www2.tvboxnow.com[attach]1486501[/attach] ( D ~& F8 d1 S- y" y/ X+ hwww2.tvboxnow.com[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。! [/ U1 x/ x- {) G) q [attach]1486503[/attach] & |$ j2 @# c$ B0 d4 Q[attach]1486504[/attach] 7 n. W% U" U g2 Y[attach]1486505[/attach]tvb now,tvbnow,bttvb3 `$ S9 G8 @+ E6 f. X8 k
* }0 x6 `' j. @8 M1 O3 n- y4 r公仔箱論壇作者: busyfun 時間: 2011-10-4 11:33 AM
