本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。 f- z* y, H% w# v/ R1 e" a7 X( O" X
- X+ b" B# {/ p* h5.39.217.76If you are not a Physics person, read on and learn a fact of physics. 4 {7 s- J$ z( C8 i* T% G
AMAZING! ( `$ i* W' Z8 t/ F$ T6 H# m. k
; D6 x& e. b7 `& t5 U公仔箱論壇Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
6 }9 X0 k* O' j$ i" m2 |This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ) Y: J3 L6 K6 z) n/ T' Q' h+ p
It is located in the city of Magdeburg, near Berlin.5.39.217.76: @7 y: k8 m# k- Y- j5 B1 e
& D% B5 m: p( e2 Y! gtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
( f: i& D! n# u: U& s T f+ k5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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; s" h$ d6 K, a9 n" G- U公仔箱論壇Question:tvb now,tvbnow,bttvb5 P3 e8 H& G8 Z3 d$ X' N
, U! t# ^% {% Z1 f2 L4 t5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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。* f- ~1 G' w: d9 i7 D0 G6 Y
Or just the weight of the water?
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Answer:5.39.217.76( [4 J$ J$ B( i, r) I
tvb now,tvbnow,bttvb6 G3 ~) o! h7 G3 _6 H( @9 M4 t0 g! [
It only needs to be designed to withstand the weight of the water! & ^) r2 w+ u' q" [* a( `- ~
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% @0 j0 O# p& Z$ f% [# \
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。! D9 ?: X! J' Y! }+ ^0 q" d
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The Incredible Magdeburg Water Bridge in Germany
+ _: L) J3 J& Q, o% h3 j4 w9 rThe 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。7 G/ t" ]4 i. O' F" R7 G$ b6 D4 ~4 r
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) a6 S4 W. D) B- |- i( [. D
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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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; N1 d; j6 [ X8 b' e( c8 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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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。, }* u( f. Q# ~, J# X, l7 F; f
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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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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。/ ?$ M/ ]8 w- B l
發表於 2011-10-15 09:35 PM
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