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 3 B( D* |! a2 J* }2 H) I
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。; ~* l. l3 [' e# z0 j
If you are not a Physics person, read on and learn a fact of physics. . Y+ S8 r6 r8 o" G& H. C2 i2 A6 VAMAZING! 0 `, L% _, x! f+ q4 h k# f5 X9 g7 u% d Y. F1 s
Even after you see it, it is still hard to believe!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。# D% Q7 E( }+ _# H- I, Q [attach]1486499[/attach]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。9 c0 |, [+ k! n( m, ^! D( M
9 N& J, O; w8 z0 A! DMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 7 \( N3 B( |2 J2 Z/ m2 d+ |
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 9 K) q7 c- Z6 y! t* W公仔箱論壇It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb# g: x+ g- q& B# s2 Q
公仔箱論壇) t9 [' p. t" m
The photo was taken on the day of inauguration.公仔箱論壇, I O" U' j+ J- t* m
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb2 C& k$ k1 r0 h8 S
tvb now,tvbnow,bttvb7 c: F) {- s" h! h) v& ~9 p
Question:5.39.217.77:8898 l) G6 v) e& h5 }
tvb now,tvbnow,bttvb( ]* U- `3 E4 Z7 K
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, : b. B. _& ~( d* ?2 K; UOr just the weight of the water? 5.39.217.77:88988 L* P% b* A" {
z% e9 H6 \7 ?0 V9 nAnswer: * n. H( G1 D* ]8 }. ^" O5.39.217.77:8898 0 u7 ]% ~4 D; J, h0 ]8 z& w' r5.39.217.77:8898It only needs to be designed to withstand the weight of the water! 5.39.217.77:8898) u: F) z$ t. {0 y/ ^& [5 M5 S6 B
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 7 F; y$ Y$ h/ ?, K5.39.217.77:8898& [9 ?, `; M# f3 V5 e
L9 n, t8 b0 l+ @& H1 N' V! J The Incredible Magdeburg Water Bridge in Germany5.39.217.77:8898' Y6 h" v5 p+ y8 y, j# u
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.5.39.217.77:88980 u! i- B, Y3 U, [
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. 5.39.217.77:8898! u% P8 u: H# e- y: I
1 R! i% o2 R5 e( [. ?. T, hConstruction 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. * s: ^% ]+ q5 N$ D+ J; |% b! M+ Y- u: {
公仔箱論壇! V; c9 ~6 u/ P$ _1 j. o
tvb now,tvbnow,bttvb& o; A, t# K, k; s7 H1 l. G, I [attach]1486500[/attach]4 y1 ?. K2 e+ e( R1 M [attach]1486501[/attach] " V1 _5 x3 v/ u( G+ [' P( r6 ^5.39.217.77:8898[attach]1486502[/attach]5.39.217.77:8898, c& L+ O/ s- z( g5 ?6 }% } [attach]1486503[/attach] s2 k8 `- @) G, e[attach]1486504[/attach] b( y+ x* j# {5.39.217.77:8898[attach]1486505[/attach]$ w& P+ z- P: u
公仔箱論壇2 q+ b. q" g) o5 T 作者: busyfun 時間: 2011-10-4 11:33 AM
5.39.217.77:88984 b0 U$ Y" G4 M) e$ i