本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。- z3 I' D% ]* |2 A$ `
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If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇 L( v* L4 O, j6 S- ]
AMAZING! tvb now,tvbnow,bttvb& K; C% R3 q+ P5 v, w A4 V5 ^
8 n5 {. x+ `/ P) K0 ^; s5.39.217.76Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
7 I$ c P1 p7 Z0 C5 mThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. , ?7 K' k( ?4 ~4 H6 h; ~ ]) P
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.5.39.217.76. U) s& m1 A2 n/ i
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:5.39.217.764 S" z N% {9 q6 c
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,' M( H4 S( q! R" h3 w! O" j) I
Or just the weight of the water? tvb now,tvbnow,bttvb0 i5 C( B1 c7 B# C' M5 d7 R+ Y
3 \% R; }' }/ `' \- atvb now,tvbnow,bttvbAnswer:
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It only needs to be designed to withstand the weight of the water! 9 b- i8 G/ K6 C+ l1 d$ H9 O. i! V0 k
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
c4 l9 F m# e& h9 o5 MTVBNOW 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- n$ n0 t7 a4 b3 `/ b
5 f. v2 t( X# I" P5.39.217.76The Incredible Magdeburg Water Bridge in Germany
" [# G/ [1 E4 j6 @1 C- [公仔箱論壇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.
1 A+ ?0 L2 a+ h# Q0 S1 p- c5.39.217.76The 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. 4 I1 N/ b! G; y" H
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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.
, m q/ U; L2 T. Q" U2 w8 K6 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。
' B4 ^9 S. `( W9 b2 D2 `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。
& f& p+ f4 b6 y& t公仔箱論壇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。7 c: ]: N% f- G/ x! B' N, C
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