本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 - p% I+ g: U1 o9 y/ [
_9 L; m; `* n# d: X公仔箱論壇If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb4 A, y$ m5 u% Y5 ^( j9 z" |
AMAZING! www1.tvboxnow.com' e/ R" x2 ?( E: {
+ a* G$ x% M1 F! h0 R7 k' H* z公仔箱論壇Even after you see it, it is still hard to believe!3 x, K T# H. E! u; p. r
公仔箱論壇1 m1 q' D6 r3 X) x
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。; o- O; h7 G. s. u
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
9 n& r7 d& O1 q6 B1 ^- w8 G6 {This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 Q* e1 D. a4 w( }7 _1 y7 ~% {公仔箱論壇It is located in the city of Magdeburg, near Berlin.
( ]( s; A/ [+ B a6 e; `www1.tvboxnow.com* \, o+ V; r. V# V7 f/ u. f7 h
The photo was taken on the day of inauguration.
$ ~# _ e- L8 T! B8 @To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.% p9 Z( a+ s; Y) Z
) P% u7 H& V! }5 b) h! B* F+ ftvb now,tvbnow,bttvbQuestion:www1.tvboxnow.com- K5 P/ O) A1 ?
h* U. Q& u2 S' H+ ?' W; ctvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
+ i. N; Y6 y+ q8 o) h! I& x) ]+ R公仔箱論壇Or just the weight of the water?
' v9 u n9 \/ @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。www1.tvboxnow.com( l: a; d" Q/ f) a- r
Answer:
9 H o% K& M" l% f x/ t3 Z
" s/ A+ Z( m; B公仔箱論壇It only needs to be designed to withstand the weight of the water!
& i2 G0 m# p5 q. o a }tvb now,tvbnow,bttvbWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
& c; L0 Y: w. B6 G/ KTVBNOW 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。 e- T& v/ `0 b+ o( ^2 m
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。5 Y7 E+ _6 Z& K; @& w7 |* O
The Incredible Magdeburg Water Bridge in Germany
" o& e4 l+ q! S kwww1.tvboxnow.comThe 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.
. g3 ]: j$ o3 y: l6 \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. tvb now,tvbnow,bttvb2 O. [- \8 r& b
9 Q) D u9 i! E5 P) M1 Q
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.
* b% @2 l& e# U, y/ F' Ftvb now,tvbnow,bttvb
/ {, l* y+ {$ t% \tvb now,tvbnow,bttvbTVBNOW 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。- t( w! A: p8 N: S' A" ?- \ V: N
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。6 C6 ]& T# w& D
! T, m7 u! P: l7 ^* K0 P) rtvb now,tvbnow,bttvb
8 e4 `1 @( k0 X# g' p4 F5 [" UTVBNOW 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。
$ g3 C D; K1 m- |) @+ U
, A# f8 ?1 j- M- h% j: k& N0 c公仔箱論壇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。! ~ D0 }: X0 {' l( ?) n
+ ?+ P* f! R8 z, P1 l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
|