本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 + d5 m# L8 X! C2 |- F/ j8 I, |* d
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If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb& p& a6 y' t9 g& G
AMAZING! tvb now,tvbnow,bttvb; Z/ B" @0 D: x* E
7 y" d( V- z4 j* n* Y) Z T5.39.217.76Even after you see it, it is still hard to believe!
" u8 j- }! o: d. g/ k, q& r+ hTVBNOW 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。$ B. c: ^* Y9 a
! W* V0 H8 q8 {: b& b1 O# EMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
5 S# O% w y/ H* Q$ o2 d0 z# Z# h) R公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
5 l4 B# k0 x# m& G @- Q5.39.217.76It is located in the city of Magdeburg, near Berlin.- A! k+ ~3 O3 }6 ?$ v! t. ^& u6 |
& \: O+ K% {$ s公仔箱論壇The photo was taken on the day of inauguration.
+ s- t% J2 y8 X+ N6 G( |tvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
8 e h) L, A$ h+ g. a/ i2 NTVBNOW 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 X P/ J1 A( k& D: J. N' @" c公仔箱論壇Question:tvb now,tvbnow,bttvb4 h7 S1 A0 A5 T$ E3 h9 q, k, H
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。) V$ G& h ~0 N3 W- y+ t
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,1 c& M$ e$ R. t3 q6 }8 E0 `1 E) L
Or just the weight of the water?
/ S8 e f+ t) P& S5 |9 q9 T公仔箱論壇
) G- e5 C! \6 P& i" ctvb now,tvbnow,bttvbAnswer:公仔箱論壇5 Q0 u% q- P, G' u& p0 C! `+ c
/ }7 r& @ O# I% G T1 u% k4 rtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb% r6 k: o6 m. k7 e; \, u6 Z
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
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The Incredible Magdeburg Water Bridge in Germany8 r$ A U' S% e$ e3 _
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.8 r0 {: Z/ r8 X# y. g% x5 {
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.
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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. + v0 v6 P0 l4 Y. ]6 b5 C& `
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