本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇5 D3 ?$ _' N0 o J$ B# T% v
AMAZING! 公仔箱論壇0 ~5 R& P% p4 S& O9 b
5 q4 C2 u7 N; R公仔箱論壇Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb: O4 g/ O. k) N: ?- y; F2 Q( s
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ) {% w) T' v1 j) N
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
- q( _+ ~! D, P/ n3 h4 u+ [7 X# GTVBNOW 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 is located in the city of Magdeburg, near Berlin.
# J- l) H2 U) e. b6 `: qTVBNOW 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。
1 j3 W! ^5 r; p. SThe photo was taken on the day of inauguration.
8 u4 `" l/ g/ d2 T4 S6 eTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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3 D% G8 |% T6 bQuestion:
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3 L0 a' ^0 A$ y4 T& c3 x8 m" HDid that bridge have to be designed to withstand the additional weight of ship and barge traffic," T2 A, Y0 y. d
Or just the weight of the water?
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Answer:5.39.217.761 n4 W6 R r* w6 C$ J& z
+ {* n/ O2 Z& d公仔箱論壇It only needs to be designed to withstand the weight of the water!
" f; P8 x9 w1 q- O3 _ k6 LTVBNOW 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。Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded6 \$ l& x8 V4 \
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。. G8 l; r* q8 U* p$ U
; Y2 S. m+ ?- o8 [' M# J, J公仔箱論壇The Incredible Magdeburg Water Bridge in Germany5.39.217.76, h7 V9 z8 i# O) t3 J) A
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.5.39.217.76, Y4 C$ [+ B/ R7 W& C2 U
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. tvb now,tvbnow,bttvb+ k/ U0 [+ s4 P
_4 [. ]( x* ]( K6 n公仔箱論壇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.
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W* q# U! A, w2 P0 i5 [: |, Z5.39.217.76TVBNOW 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。$ U- {/ r" D' B7 U0 v# z
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