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.
8 I2 `9 Z4 t: b& [7 v, I' q/ _. c4 atvb now,tvbnow,bttvbAMAZING! 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。6 l" g5 y- e/ l' m7 m7 m
7 W! C" S! d7 l6 I: ?" kEven after you see it, it is still hard to believe!5.39.217.76( d6 L( _6 K4 x# e: S. X
q6 T/ S) M* u# E: v9 i% ~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。( ^& v1 k% _7 ]% D, @ o
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
8 ?0 \3 | v5 }9 V5 i: p! t1 y! Ztvb 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. 5 K1 l% W3 H. a9 Q% I: Y
It is located in the city of Magdeburg, near Berlin.: j) ~9 Z" U/ k. F" n {9 t
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。$ Y. n. \3 h2 x; M q
The photo was taken on the day of inauguration.
( c! o- ]; A3 }6 S* }* WTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。6 X6 f* c3 `7 {+ L- M5 L! _+ a
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 b- l7 a0 J- C: s3 D# w+ H5 H
Question: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 N$ b T8 _6 \3 y I, G9 F
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic," D {* d& U- l5 J, X6 e3 \
Or just the weight of the water? 5.39.217.76% [( e6 D8 W5 Z( I. U
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Answer:
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It only needs to be designed to withstand the weight of the water!
# Q) M* Z3 {% j J- G& \5.39.217.76Why? 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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* J1 T( a9 a7 F! E0 _- B0 d5 Gtvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in Germany
: E% {! q8 N2 A% NThe 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。1 F {5 n4 S3 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. 5.39.217.76; Q- x0 I$ k8 ?' G6 L
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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. tvb now,tvbnow,bttvb# E( c) ]1 _/ K- q" H+ X1 t
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