本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76 U# d( [$ ~& y4 l* N0 b: f
- S8 e+ i2 m8 J& e: BIf you are not a Physics person, read on and learn a fact of physics. + ^; d6 H6 L* |* s. _2 Q
AMAZING! L5 D5 L; F4 _' Y* x! t) x# z6 _: t
% k/ I& Q4 t7 I, o8 h5.39.217.76Even after you see it, it is still hard to believe!5.39.217.763 [# o* s& N: {0 K( I7 y# s0 P
tvb now,tvbnow,bttvb- J' x1 T6 d6 b: E# K1 Y
tvb now,tvbnow,bttvb, e$ k: a$ f9 Y4 R3 {- M* h
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
$ s* S; D& S6 x A0 r/ tThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. L7 _$ S' A+ Z+ P$ z8 z# V, P公仔箱論壇It is located in the city of Magdeburg, near Berlin.
. A8 n! L& n5 J, ^& ztvb now,tvbnow,bttvb6 `; X% n0 H. q4 F) ?( u
The photo was taken on the day of inauguration.
6 B! f- Z2 g5 T" G公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
3 y% G6 ^8 _9 L* y公仔箱論壇公仔箱論壇- a/ m% i ]+ x2 [
Question:9 `' n% H% [' k( s" V
5.39.217.764 h4 M1 a# F- J
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
7 Q1 z! H- L7 K5 n' }5.39.217.76Or just the weight of the water? 6 B4 d3 C# l7 B& |( m
, B( v7 N' q' ~9 }公仔箱論壇Answer:
7 z P& o& d" u, k1 }! o, e4 k: V5.39.217.76. r# L! k& Z0 W2 o4 n: j
It only needs to be designed to withstand the weight of the water! 公仔箱論壇0 ]9 I$ u0 G, b! d3 y. V
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
( A- N p4 {, ?8 x( Y5.39.217.76
1 I, R/ b: D* \- _+ GTVBNOW 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 e% Q& G- {! H. k' R% K) `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。The Incredible Magdeburg Water Bridge in Germany
+ w/ J" K' c& L5 A4 U0 V6 jThe 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.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。 L1 B9 ]( T) {8 g ?8 X7 g4 s
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. 公仔箱論壇2 b% H9 ]# g# t$ c+ t, b
" }" ^/ i- 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。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. / j% n: a) @/ L5 \ o9 q
6 L# B: `. C! T1 q4 CTVBNOW 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。5.39.217.767 Y2 t$ u, C2 ]5 B0 }9 O8 |. E" R
- E( n$ b' Z5 J7 p8 {3 E% W" ^
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 E6 s3 |0 D6 |8 x/ E0 m1 F
tvb now,tvbnow,bttvb3 P) y! A! @5 j/ V. E
. R. e, g0 M( U1 }( Q: ^
4 c: M/ t) d3 U- @
9 U, Z5 v! [5 w6 z0 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。( f. }) ~# {( E" n* Z5 O0 V
|
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
|