本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 O9 K6 Z: h8 I5 @8 t6 B
, ^" l" y. H) u! X$ R7 i公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. ; u8 J2 k$ e9 T3 j+ F' G- b+ e
AMAZING! tvb now,tvbnow,bttvb9 o. @! L3 w2 M' a- F% G
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Even after you see it, it is still hard to believe!' p6 Y) ]% ]. w
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7 X! f* u; X. |, U9 M( M6 aTVBNOW 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! 5.39.217.76$ C# d7 T" L- o' Z+ \! P, @
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
0 z- c+ R; C4 k* nIt is located in the city of Magdeburg, near Berlin.' d# ]: }* A1 Q- ~ d
; ?0 g! L) W( Q" _公仔箱論壇The photo was taken on the day of inauguration.
' F" }6 k8 g ]) g; [5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇. \5 B% _# s/ m! ]/ `# g; g! y
& [, ]6 w$ g* a6 _5 d公仔箱論壇Question:
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% k' V6 m) Z$ e( LDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇& S6 g5 ~3 r& v% a" S! \
Or just the weight of the water?
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Answer:; g8 `9 m X$ C- ?2 A5 t3 b# V i
8 H& P. {, X8 B' s+ i: RIt only needs to be designed to withstand the weight of the water! $ J- b. ^; G0 X& [0 B$ l) N
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公仔箱論壇( f( p9 C9 ?8 T6 a: d; ]7 V( f
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+ M4 L, ^' T. PThe Incredible Magdeburg Water Bridge in GermanyTVBNOW 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 I- v/ v. M0 i' A7 P
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.' W: {# ~/ h( s: M6 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. 公仔箱論壇; K% m' W( C: f' ~
3 w# l- q; n% M; x1 ^- 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。
! w6 H# _( `; T2 ] c1 Q& [* M) O$ |$ Wtvb now,tvbnow,bttvbTVBNOW 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。& w6 J- l9 g$ y( ^
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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。: k1 _+ `! |# q1 y" p. e3 Y! }
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