本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ) Q9 T& f6 h1 V
+ Q8 L' y9 b( i, _% c: H: ltvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
$ ~, \! x) {0 m- q; j, o% {! |- zAMAZING!
% z$ s. }& N" W9 a4 A公仔箱論壇* L S1 o; W" q+ Y3 P
Even 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! tvb now,tvbnow,bttvb0 z, P" Q5 i V* `
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
/ u8 N" D$ p6 C: ?5.39.217.76It is located in the city of Magdeburg, near Berlin.
+ v7 M* f2 L# A! B, n) ETVBNOW 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+ b; m; M z6 ~
The photo was taken on the day of inauguration.
$ y4 f8 C2 A3 N公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
2 |4 Y" p% b0 K/ G9 c1 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。
1 M4 D, U1 g) L* m7 l$ tQuestion:
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* P7 F0 b5 R5 h) T7 BDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
8 y: B. K. G7 O& w公仔箱論壇Or just the weight of the water? 公仔箱論壇" R8 @1 z6 U) {6 i8 L6 [) _: h. p0 @4 @4 e
! K! F$ R4 U) X5 [; m% d3 n9 O8 |9 u2 b6 jAnswer:
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It only needs to be designed to withstand the weight of the water!
- w# R& [+ A, j" c/ L4 F* e; x5.39.217.76Why? 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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6 j3 w. I2 _+ S% M DThe 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。8 D. u1 d: b4 m5 ~0 N9 O- A% |# M
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.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。3 j- U$ Y, ~; X- a3 J0 C( N M
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. 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 \0 X) W* N9 i; H' y7 k! H% n% {/ @
9 e. i+ f ]" n) N3 Y2 _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.
9 |( U: B" c, N9 x5.39.217.76TVBNOW 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。2 a: M8 x6 W2 A3 E% p- s
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1 `6 d4 h8 i' M7 Q1 z( p/ D5.39.217.76公仔箱論壇1 I: c5 |* I4 T, n
. G: \; V4 W# B h1 b' PTVBNOW 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。
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* _. y; P7 W( L; v7 t" |# YTVBNOW 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。
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