本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
; B( Z/ u* l* Z$ c `' z
! ^9 Z. k" w. t4 K公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.
1 l. j4 e6 i0 ]6 ?* i- f4 P6 _tvb now,tvbnow,bttvbAMAZING! 5.39.217.77:88988 [, u7 X' s" }. N) h
tvb now,tvbnow,bttvb) L u% A, Z* f) q8 G, H# L* i% h
Even after you see it, it is still hard to believe!
- ~9 o+ ?% |: G( t+ O公仔箱論壇4 h2 {; P+ L* d
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。0 r$ _4 I; N5 k& O& A( T5 g0 O
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
: m7 |2 x% h1 F9 n4 ?& b" IThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 9 g0 V. H8 P9 g# k$ C+ D% C" y
It is located in the city of Magdeburg, near Berlin.公仔箱論壇% N' g& j+ e C$ A0 ]
i8 D8 I3 U% C+ H1 x( btvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.5.39.217.77:8898% A' E ]/ X" s. S+ m; O! S
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇$ H9 E: O" e1 v1 ]) O7 \" s
& r, n. x# ^7 @. k* J公仔箱論壇Question:tvb now,tvbnow,bttvb0 [3 D4 }8 _! r! o; D0 W
tvb now,tvbnow,bttvb& X) d0 r$ W ?' O' j
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,! O: b5 E: T1 u4 O; T7 _
Or just 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。4 `+ V& b2 q6 J' n! ~* A9 v
0 v) Q; w) l0 A
Answer:5.39.217.77:8898( q8 E% I; ^0 O$ \8 b- g
公仔箱論壇! D9 K- P! u+ ?: W
It only needs to be designed to withstand the weight of the water! 7 I. W- g! l! E- s
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
6 q1 s/ `3 n, Z- b) 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。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。/ x& B+ f9 a U e
' ~ b u& B( Y$ G. }) B; Z) m5.39.217.77:8898The Incredible Magdeburg Water Bridge in Germany
3 O. W$ z! l0 F v L: q. z4 i1 ~: A1 Y5.39.217.77:8898The 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.
' E/ ^* @# R7 X: w* Y+ K1 cThe 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. ( {* m7 M/ r7 c* T
" k. T) }9 x9 [1 I& g' ?5.39.217.77:8898Construction 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. 公仔箱論壇: _# F+ Y0 x7 o+ {
6 I/ k; @# d \* a+ C! m) ]5.39.217.77:88981 G' H5 y9 t) D
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 P, i5 \6 O0 p/ l$ x& A
5.39.217.77:8898, h/ M+ ?: C5 b# U/ G) `
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。; v1 X4 k R4 j* {& Q
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。$ i, \* p% f; j
公仔箱論壇; L/ }$ R% S& e- l6 j: m) F
5.39.217.77:8898( s( N- {, a6 M' o
, |( M/ s+ y$ k公仔箱論壇 |
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
發表於 2011-10-15 09:35 PM
|