本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
6 F* d2 z7 I9 G: w7 K2 m ~( Q# btvb now,tvbnow,bttvb公仔箱論壇5 Q* \, G% ~& B t
If you are not a Physics person, read on and learn a fact of physics. 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。8 Z: M* X5 H1 x7 }+ }4 U5 v- E4 j6 V
AMAZING!
! X+ \4 X2 k B/ U6 ?+ ^6 D8 L
: J. o. Q$ Q1 N: e0 OTVBNOW 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。Even after you see it, it is still hard to believe!
, |6 D/ M8 t8 y; s* t公仔箱論壇: Q; T9 L6 `5 J6 B; L' Q
2 A+ S1 m( [/ s: w- r$ UMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
]4 l* s, E% u4 F2 X n h公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.76" W( i& h B4 F
It is located in the city of Magdeburg, near Berlin.
6 L- i% K2 ^5 j) ^公仔箱論壇公仔箱論壇0 e; K% Z2 e5 U' `5 o& D- O7 N
The photo was taken on the day of inauguration.
) A, j* k K2 D公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76* W& u1 T3 c; U, D1 O0 H: [
7 m% q$ P+ E( S/ R3 jQuestion:
! z$ |7 N' {9 ]0 h' G公仔箱論壇tvb now,tvbnow,bttvb+ C- u. I2 ~* Z9 t
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇, B% H5 m9 o9 q1 ?3 u
Or just the weight of the water?
# q" [& g+ g" F \# g% H5.39.217.766 C9 d! U( \+ s3 D g- r! E7 k
Answer:. J, v+ s* C; X* z6 b1 _
! v# Q6 v8 N; o! J( C: ^1 U9 e5.39.217.76It only needs to be designed to withstand the weight of the water! 公仔箱論壇$ o8 s7 r- O/ l9 b5 `
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb6 m o% A9 _( `" Y' Y% j
% L* P8 X7 A: W# h
5 N" z% s1 f2 `" M2 p
The Incredible Magdeburg Water Bridge in Germany& g& g# w8 r* F2 L( B/ j
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.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。2 M$ H* D% t6 ^% h$ \0 ^) k- F
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. 9 ^% V' U7 `0 m. q
6 l1 Q/ {8 q; N6 WConstruction 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. 7 `# C" o5 T; A4 `5 I4 H3 Y
' E2 R3 K+ d! `9 M. v, \ Y' O/ mtvb 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。+ J* ?6 n2 J# p8 I7 q% I) {- {0 e
9 c5 ^. [% R% q) r( W0 c
3 K( [ d. ^3 q0 s# U5.39.217.765 C7 @/ H; y) f- G* f
. Z, E4 o* J/ U( ]5 L4 W, h& v
}- [# }8 z8 p8 N* j. h+ h2 T; HTVBNOW 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。
$ }3 W T E/ ~6 s+ `9 I. W `
% I; R) b* R( E6 utvb now,tvbnow,bttvb |
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
|