本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 & q Q% p& b8 T, V4 j
公仔箱論壇- G& k5 ~+ n, L
If you are not a Physics person, read on and learn a fact of physics. % b" v, }8 N/ d5 L1 {( F
AMAZING! 5.39.217.762 ~3 ~2 R# p) e8 o, A [
9 [ q0 a$ y' y# Z+ b公仔箱論壇Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb+ a- Z% R7 u/ ]9 G! z, Z% @' R: `
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。 \2 h3 d' {. y
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
; l5 ]! Z3 f- u0 Y6 V+ mIt is located in the city of Magdeburg, near Berlin.- [; q0 s; B; v7 C* Q- \) V
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。" D5 _; j$ [/ |# j) @
The photo was taken on the day of inauguration.
6 H8 M% ~: Z5 ~ i* U* w4 W. T公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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" x8 Y/ j. X e3 uQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb2 M# o, t/ e0 I3 J4 E$ b/ {; j
Or just the weight of the water?
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0 Z6 O2 k* V E1 VAnswer:5.39.217.760 M% b8 X% ]+ x
! ~. r/ x' V( I) H6 V e5.39.217.76It only needs to be designed to withstand the weight of the water!
2 `) K! J7 H& p+ A) G4 y) B7 y' M" {1 Mtvb now,tvbnow,bttvbWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
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The Incredible Magdeburg Water Bridge in Germany$ s9 M, P2 d# S% k
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.
% o- e' A( K* o. u, Y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. ; V0 M6 U* N5 d% E
5 ?% P" Z3 z8 r# G* A. i# sTVBNOW 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。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+ U, {9 ^$ ?4 _) i
" W4 P; q& j+ r4 x+ STVBNOW 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 ^8 w% U8 J( V* Z5.39.217.765.39.217.76. B, N- i7 L/ ]
" b/ j5 B+ Q9 N' jtvb now,tvbnow,bttvb公仔箱論壇8 O9 b* K" _% V$ V) X6 s
$ j/ J5 S: V. Y0 p# M XTVBNOW 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,bttvb8 b# v: b4 B# {1 W
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