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.
2 e, f% w; Q6 q- q- Q5 D: D fAMAZING!
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8 l. I0 k5 M8 |0 Z( R: J0 Z* eEven after you see it, it is still hard to believe! b/ R9 v, |" r4 z3 b
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
4 S0 o! j$ ^& Y: W7 Etvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 n! ^# E3 ?, a4 d9 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。It is located in the city of Magdeburg, near Berlin.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。- s, {" C2 v, G4 t1 I
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The photo was taken on the day of inauguration.
], e/ p% H2 C, ~To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.776 h+ F, x, C; ~3 o( g& s# r4 S
5 G6 r3 }8 I1 ?$ X2 v0 A# qQuestion:5.39.217.773 K2 m& A0 M: O
" q9 w% \: q; G8 X7 b1 xDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb5 w ^/ y) u( t7 S0 R
Or just the weight of the water? - ^% h# F1 V' H( Y
" Q- x7 I6 g X: E* e0 i. k/ q5.39.217.77Answer:
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6 g# P# W- ?: K9 ]% {5.39.217.77It only needs to be designed to withstand the weight of the water!
8 G9 c: G% I$ eWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb9 B0 A) q/ Y. p5 T# r
1 S: C7 O5 |& T1 H, ?# 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。
0 ~ Y% `7 S) L9 _7 S5.39.217.77The Incredible Magdeburg Water Bridge in Germany
5 j- a+ Z9 u2 s& r5.39.217.77The 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.
; Z( W4 \' S# f# R0 L% V5.39.217.77The 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. 5.39.217.77# _& g& ]* m9 X
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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.
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