本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb; [ w; E0 q: A1 H. M/ b" x
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If you are not a Physics person, read on and learn a fact of physics. os.tvboxnow.com0 e$ E7 z/ m3 [8 u* Q6 l z
AMAZING!
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Even after you see it, it is still hard to believe!
. a' F- j$ Q3 y6 [# }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。! R0 l. B8 g E% d' ^$ O2 a
) V* \8 E" |& I% M3 F; l' dMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
; D; ~% I e; W# }' v$ \os.tvboxnow.comThis 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; \- H, a1 l! K9 {" Z* X, @' J8 j4 f1 z
It is located in the city of Magdeburg, near Berlin.! g7 |" J) [$ M
5 {3 E; ^# w( ?8 g8 q0 j( wtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
- h) s. K/ q. d% lTVBNOW 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。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。1 ~ j' t+ B3 R* o8 E
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Question:! z# \6 C" i6 J8 I- ~% w; c$ Y( L
4 d" b% p; B/ t( ~9 K" Xtvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
4 Y: q# z1 b b8 V: W5 Y4 uos.tvboxnow.comOr just the weight of the water? tvb now,tvbnow,bttvb: k0 t% T5 a$ S. L% f; e: F7 ?
: F/ {, Q) P; ?5 v3 los.tvboxnow.comAnswer:
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: ?# Z- d8 M( O8 c) V% ?It only needs to be designed to withstand the weight of the water!
: G0 V: u' @7 etvb now,tvbnow,bttvbWhy? 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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! _( b0 j4 D' b7 V公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
& c. h+ ]+ r+ }; U' ~: @* v6 W公仔箱論壇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.
_1 Y7 t/ N! A公仔箱論壇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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9 I# A+ J" T' h' p6 d公仔箱論壇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. os.tvboxnow.com7 i% D5 m. P& n: w
公仔箱論壇/ R* r9 }3 d' n! Q3 T4 `: O9 ^
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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。7 _8 L2 z9 w4 C S
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