本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
$ ?3 J8 G! k3 y( H4 u, @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 Y' k0 E" V; A; i7 z& | EIf you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb- y" Z! r. }% y6 W3 J
AMAZING!
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x# u3 R2 g5 {5.39.217.77Even after you see it, it is still hard to believe!
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0 n, w- l8 C7 O5 y0 n# wTVBNOW 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 k/ [9 o* y) s* ^/ s公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
. {. f6 P% _! L* a/ J: i( I IThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
9 c" H0 t5 U# ?0 y5 H# iTVBNOW 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。It is located in the city of Magdeburg, near Berlin.5.39.217.772 X5 {2 y, ~% ?3 i9 \9 s4 R
. `; i+ W# |" P/ H公仔箱論壇The photo was taken on the day of inauguration.
4 ]: l" j M2 bTo 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。4 [0 S( ], w+ z8 A
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
+ q- z3 x. h% N- yOr just the weight of the water? * ~; V* _' \" @; n$ ^. [7 S) Q d: a/ ?0 S
g7 Y" `6 Q2 m9 Utvb now,tvbnow,bttvbAnswer:公仔箱論壇/ I, n9 @' Q! f& l% e& v9 B: {
公仔箱論壇* q9 `) e" \# [1 W
It only needs to be designed to withstand the weight of the water!
; Z. @8 X% B, j' X1 e/ V公仔箱論壇Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.77 H* P% S( w/ G. o u# `
* z+ T3 M7 m- V! K% | ?: qTVBNOW 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。
. O9 a2 ]# @4 R% p8 f# }The Incredible Magdeburg Water Bridge in Germany
4 S7 G3 U m4 _, ?) cThe 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.5.39.217.770 z, ]0 J/ o L0 J
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.
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- g9 Q+ G6 \2 K, }$ G u0 R& \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, x+ T: K1 E# A7 ^0 F公仔箱論壇5.39.217.777 `' R4 F8 g2 l
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