本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
9 ^9 r1 d# x/ i5 f2 W* u公仔箱論壇7 K7 Z$ r/ n8 O, m
If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!公仔箱論壇1 ]7 i2 ?* h' @* d# _- S& `) M
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R% h$ J' e8 `. F* ~2 gTVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! # W! R0 U: x$ k2 Y0 y' C
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb. a6 Q* s* u) T
It is located in the city of Magdeburg, near Berlin.
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1 a* b! f% r0 X8 g2 |/ P! Stvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
# h5 {+ D, `4 {, e9 ]5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇0 u. R. M/ ?4 {' ]- H
7 _; c2 J# F) O* B6 ~8 _- }tvb now,tvbnow,bttvbQuestion:
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( i; A5 E( P0 ~7 l9 pDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb# Y3 b6 P+ R9 [- _/ w
Or just the weight of the water? 5.39.217.76: m/ {1 e* c* I' b# G2 A6 a
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9 n4 `/ ^6 P5 n7 X, a公仔箱論壇It only needs to be designed to withstand the weight of the water!
! f% M" l) w. Y0 Y" G公仔箱論壇Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.76& Q* s3 V# J( m& J: k
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+ ?9 ?: E5 o1 L. `5.39.217.76The Incredible Magdeburg Water Bridge in Germany! V! A w' b+ Q; n" v
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.tvb now,tvbnow,bttvb$ S- s% L+ l8 i5 f1 }' S. @
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.
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, `9 t) J6 J! I5 o% _1 CTVBNOW 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 k: q( q( b* y. |9 ]* vTVBNOW 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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5 K: X/ r! F* X. U* C: h* m' TTVBNOW 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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