本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 / J! w" B( N& q1 O; Z& B
5 v. F# t" o9 s& x. a7 m7 VTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics.
Q, F3 \% V% x0 Ztvb now,tvbnow,bttvbAMAZING!
7 ?. K ~0 m! s# z
9 A J5 t6 g; h4 l- k* x. u) _公仔箱論壇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& [2 s/ g& U+ r5 Z5 e3 u0 N+ _
公仔箱論壇) v7 h$ j3 x( ]' F% @/ {. o
公仔箱論壇8 Z6 n6 I$ j$ C4 u( n
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
+ ^! ^# P- a7 j8 O% f, g8 _" c5.39.217.77:8898This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
8 r1 ~. g4 R; @2 d# gtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
2 v/ a: o) t: p! s' R% c
W2 f* T6 k( ptvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
, X1 @" N2 K! L% g- e8 M5 yTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.77:88986 _5 {$ Z% N) ^, F8 _$ t
9 d' g7 P$ C& w( aTVBNOW 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。Question:9 I1 [. v0 ?! Y* p g, m
- v5 g+ A4 N( n7 }; jtvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb/ h4 h2 D( U" \, e. I& a
Or just the weight of the water?
8 R6 Y$ x7 Z z1 u7 g, S
9 [$ ~; Q# N; ~, v9 {( \5.39.217.77:8898Answer:
* x) X& S) L. W5 u; B, m! |3 F0 \; @/ M0 F2 e4 V
It only needs to be designed to withstand the weight of the water! # h H" Q; x/ l$ n3 U0 Q6 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
- u" [& W+ ^: N- S% f0 dTVBNOW 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。
( j! k8 @& Q! y* v- m( R# L公仔箱論壇
( ?. d/ x3 l6 |公仔箱論壇The Incredible Magdeburg Water Bridge in Germany5.39.217.77:8898 S8 g; l3 J1 S/ s' E" s" ]8 a
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.) C# ]5 i3 e0 @; {, v
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.
& y8 u+ V% {; J; mTVBNOW 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。- f& W7 p$ C! ^+ ^! t0 j
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. ! \# _- B0 c/ H5 O2 g7 G w
! t1 k6 F7 t- b' j0 a$ X/ _+ K& W
* [1 J4 e5 P) F# ]# t/ B# v# S8 e) L! i" U6 m, K4 S
( O& b# W3 f" K8 D
* r& v/ \6 T; t
, L. h3 ]. b; `5 e. utvb now,tvbnow,bttvb$ c: e! _- G* l8 t7 P; }
^: _4 ^: ~! O: B# \4 htvb now,tvbnow,bttvb5.39.217.77:8898( W' d# g1 g' {; S8 P
|
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
|