本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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9 o0 Y3 k7 F; U) J% h* c8 W; Gtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
3 J" A. J# D3 A' L0 w3 D- G5.39.217.77:8898AMAZING!
( ~2 r4 a' _& O2 X公仔箱論壇
) l0 P, Y7 a/ r4 I- stvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!& _) _3 Y7 L8 t6 b
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) X+ ~. Y5 c" `; Z' O+ E% c4 V5.39.217.77:8898Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.77:88988 g5 a5 h m5 Q4 ?9 o
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
+ c, A- W& N6 |! N1 O6 k2 D5.39.217.77:8898It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
- m. R9 ]* }4 NTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇8 `) m8 E( S5 p& @
, U; ]: y8 Q; P- |9 Y: f8 ]8 CQuestion:2 |2 v4 O3 u* _, R( O
; h) @+ S; F6 c D6 j3 fDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
5 W8 V5 A( n H; Utvb now,tvbnow,bttvbOr just the weight of the water?
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Answer:5.39.217.77:88986 |( @! p9 \0 ^- {3 A
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It only needs to be designed to withstand the weight of the water!
' j {$ }) Y! ^8 E5 P3 g4 ]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- @8 _0 u8 ~1 x0 r/ ~. Z
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The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb/ S/ r$ }6 ~ M7 @7 s1 ~ _
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.; s- t! W& ~ f/ \3 ^
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. + y0 B. O2 r4 g" ^
# r. \" m$ H& t/ W' m& j0 \% r) u, rtvb now,tvbnow,bttvbConstruction 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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9 K( x: N% D, a( p5 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。5.39.217.77:8898/ i6 i; Y0 ~/ d# |% i
3 N0 i4 k. H$ ^5 G: R8 J+ r$ u公仔箱論壇公仔箱論壇0 m& p+ Q @2 N0 x2 g) r: L
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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。/ h/ {- G7 j, g) D/ ?) C. |( a# m% g
" R. s& {3 P) 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。4 M% K$ w. y( z( R0 q$ l: Y
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