標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁] 作者: lilitan008 時間: 2011-10-2 10:09 PM 標題: EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 * o1 ~ G6 L# E- W- N6 ^" Ctvb now,tvbnow,bttvb5 }5 z. R! R+ v. `7 m
If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb" |6 i# I7 g0 H0 k
AMAZING! tvb now,tvbnow,bttvb) c* O& p5 a" i6 m; F ! J& k# ?) a6 X5 A$ }3 T, Utvb now,tvbnow,bttvbEven after you see it, it is still hard to believe! - m8 s1 B8 L8 E% S6 L" g1 h: g, D[attach]1486499[/attach] 7 y* q G1 G5 }9 k( Y/ z7 ^公仔箱論壇0 s3 {' {% O! C% ?6 F" D
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇9 Q- v' D9 F% w8 E# |
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 9 K& c( ~: Z: a. \' @' j7 w4 g公仔箱論壇It is located in the city of Magdeburg, near Berlin.公仔箱論壇* m4 r/ L* W; G5 h1 R' Q0 M
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The photo was taken on the day of inauguration.公仔箱論壇- g" p0 @: s$ b9 c$ X8 e
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb. T* {4 G3 h0 M+ x4 X: E' U
3 e! X0 G2 Y/ A5 ]) dQuestion: ; N# s* T/ m4 R, Y) X8 e * W- t7 t' G% B: t; H0 N9 V' Q. c公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, # q1 ~1 Z/ y: U: e8 t0 s2 A0 r2 b$ oOr just the weight of the water? tvb now,tvbnow,bttvb5 F" f6 g0 d! V0 @
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Answer: 6 C8 z- M" ?4 t# H' ^5.39.217.77:88984 M/ e* f1 q7 o5 h) R8 z0 s: J* z
It only needs to be designed to withstand the weight of the water! 公仔箱論壇4 ?: t! ~7 v0 E* q8 k! q* i
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 : h$ S8 V. F- n9 S& g公仔箱論壇5.39.217.77:88980 B1 A+ N: @; K
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。' x" C2 X" o5 N. t) Q. K/ F The Incredible Magdeburg Water Bridge in Germany5.39.217.77:8898! F6 I# Q+ b1 j! F( 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.2 m' v2 t4 ^! K' X
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. 0 l1 ?+ Q' r" Q2 s5.39.217.77:8898) u. h6 w- x& I( q- _$ F+ ?# e
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. tvb now,tvbnow,bttvb4 F" b# |& D& X3 S
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