標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁] 作者: lilitan008 時間: 2011-10-2 10:09 PM 標題: EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ; `8 Y" k+ a1 K8 b. O$ ~; L7 p公仔箱論壇! ]8 X; h4 V2 f. S
If you are not a Physics person, read on and learn a fact of physics. 7 m& \2 g8 [$ n8 P; ~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。AMAZING! 5.39.217.77:8898' K) f/ L8 G# h: M 1 T" ~3 A) }( s+ Z) Y# l" N2 z5.39.217.77:8898Even after you see it, it is still hard to believe!5.39.217.77:88986 q& H1 U, e5 G' Q8 w: ^( k9 K [attach]1486499[/attach]5.39.217.77:8898; u) W; [7 L; t
; |7 x* }' b0 {7 ^. p8 eMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! & A. ]; Y* x; _. V! Y" _! q5.39.217.77:8898This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. # S, K2 V. H% ?9 ~4 j* D# _It is located in the city of Magdeburg, near Berlin.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 ?: `0 M; R4 u+ v8 a- ^
7 d2 }+ m* `8 k! R5 gtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.& ^7 a# F3 U) Y5 R! E
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists. . T3 J+ H# X, p% [6 J& R公仔箱論壇公仔箱論壇% z8 e# q$ I/ _# r) g8 P) e
Question: ' j I+ z1 C6 |! i9 J1 S& E" E7 ]# A9 A$ L1 i; h, o
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, 9 `3 M/ Q% a# 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。Or just the weight of the water? . U+ ~( n& j1 j4 o9 V
5.39.217.77:88984 O, ^ I b$ w T k$ ^
Answer:+ L' K7 u @ A! h6 R
. t2 E f" ^( o9 G* ]" V" y2 e公仔箱論壇It only needs to be designed to withstand the weight of the water! 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。3 ]2 h; D/ o; z: ?' `
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7 d" W) V9 Y) ^/ d2 t9 S9 B1 D- A 5.39.217.77:8898. O3 h$ M0 v5 ~; F/ z
tvb now,tvbnow,bttvb3 h% c+ T( N9 ~/ x; o1 W: W8 D The Incredible Magdeburg Water Bridge in Germany 0 Z2 O+ E+ b8 b8 r9 {' L; itvb now,tvbnow,bttvbThe 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.4 v- O+ z$ H7 b- k& M
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. + c( f9 p* K' {8 ETVBNOW 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。( i. s: v- n) N0 P' [
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. 5 @9 I: b0 G' z5 Q# r" l# _$ [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。8 {0 u2 l1 y8 m
# g( P- g" T1 W7 p4 l[attach]1486500[/attach]5.39.217.77:88981 k+ y& [" `! r0 T! }4 ^) J [attach]1486501[/attach] , D3 `6 u: I# R5 I! J7 P( J8 r- M" ttvb now,tvbnow,bttvb[attach]1486502[/attach]公仔箱論壇/ q H6 F& s0 r; r [attach]1486503[/attach] - M8 T9 \$ M3 l. L1 a8 _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。[attach]1486504[/attach] 0 q3 j H* D8 X5 M; U2 ^公仔箱論壇[attach]1486505[/attach] * b: R9 j5 J. N% L- f' m公仔箱論壇 " W# a& T+ ]* V V公仔箱論壇作者: busyfun 時間: 2011-10-4 11:33 AM
