本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇: x' @( F) G' o! B! F
- t, A, A9 u2 u% aIf you are not a Physics person, read on and learn a fact of physics. - j' L& A# P. g
AMAZING! 公仔箱論壇7 t5 v- y8 @ J8 f
# E7 W) Q' G a' Z/ d' E5.39.217.76Even after you see it, it is still hard to believe!公仔箱論壇% {/ s* ?) u/ e: p
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
6 K9 p8 [! y, W" `This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇4 A- q9 q; @- a2 E1 j
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb Y2 R0 s. }5 w* K v0 M
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The photo was taken on the day of inauguration.* \2 l3 U( l' g* Q/ C6 o& ?
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.6 R/ j( R9 a. f( W5 [
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Question: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。0 q- r# r6 s! R% E
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
; w# J' Q" d: H* [' \5.39.217.76Or just the weight of the water? 0 x( `. s& N: F/ R3 O( t( X% h
( V: ?( w! H- ftvb now,tvbnow,bttvbAnswer: {. P' A2 {5 _ n
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It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb' r% N. s) _9 ~' B( E
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。. D9 C6 ~$ M8 x4 ?" |
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8 p5 ?1 y3 ~9 m4 t4 E1 nThe Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。# u& @; w, p# {4 S% t
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.
7 b. }# Z( F# x: _5.39.217.76The 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. 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。0 O$ w, v+ L! ?7 \; I7 l
; S4 Y* D3 Z& z9 \, G0 x) {5.39.217.76Construction 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. + E; N* l: p7 ?/ X
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4 w8 t3 u9 t/ ]# ?! Ctvb now,tvbnow,bttvb5.39.217.76% @( \: P2 h2 {4 M. {/ |
; ]* [ {9 n3 b: Y5 ?5.39.217.76TVBNOW 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。) |# x) k( X5 f* S2 m z. Q
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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$ h% W# s* f* J9 o5 j" r
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