本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 * N% X T- e8 x; R
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If you are not a Physics person, read on and learn a fact of physics.
, `! T) x! t+ Y8 O- k: DTVBNOW 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。AMAZING! 公仔箱論壇; h, g7 m. j% F& t0 z
% q" L$ s1 c9 w/ y* Z' L* t: Btvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
. y. l) X3 M3 Q* ?9 n5.39.217.76TVBNOW 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: Y% l4 }9 Z* l1 x( `9 a
9 }( K& I7 u* W7 BMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.76& L. w4 ^! E" W! D
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇' d3 j, k* W5 f$ | r: b
It is located in the city of Magdeburg, near Berlin.
3 B1 b: z2 N# ETVBNOW 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。
/ t- [- R' ?- _+ i9 w: u a5.39.217.76The photo was taken on the day of inauguration.
; N- s2 d8 d" x# i% l" C公仔箱論壇To 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。8 F" T% ]# `5 S! E! w1 H
+ @; [9 ?( F. I1 h- y/ K0 \5.39.217.76Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
% J* z( z$ p( j3 E8 e4 m* G公仔箱論壇Or just the weight of the water? 5 y0 l+ s6 ]3 c" N$ v# X
( g5 l, E1 G: U( D( h; t) \. [Answer:
7 ~! d1 I. Q8 W( R( p# T( r- B公仔箱論壇
$ `8 p& W8 A: |' p( D. n6 Rtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water!
7 p5 |$ v0 a* l) iWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
$ t% p1 b$ t, }: w; F- o) bTVBNOW 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。5.39.217.76! D7 \3 ]% q; ~- t
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The Incredible Magdeburg Water Bridge in Germany
% C. D8 k# |/ Q2 i' O: ?5 A$ 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。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.5 T5 s6 a' `6 _4 F1 k% Q
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. . u) r# a i4 ~ }! j) m
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! E; s, k/ v6 k) E9 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。5.39.217.767 f8 x5 M1 p ?; ?' w9 |' I
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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。2 `0 N% H( s0 n0 I% F5 i; ~4 W
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5 f) j, v9 G# h5 ?7 k n3 bTVBNOW 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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