本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
2 k4 g0 p; f2 j* v! d5.39.217.77:8898
, I/ i2 v2 h* D% G( a: I7 F2 _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。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。' u: s* @7 T1 C& @+ i
AMAZING! 5.39.217.77:8898$ c6 T/ `" w8 v( X: x1 ^& w- W, _
7 R2 b7 t% F$ N9 Y, \! rTVBNOW 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!tvb now,tvbnow,bttvb/ b1 A( }& r, r
5.39.217.77:8898: e n X% j& p) D
公仔箱論壇! T4 ~+ p* ?0 i1 ?
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇& N _# m. r' m8 M9 M; C: ?
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇- ^& ? F1 ]# ^& R
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb; O' Y. K1 P3 B
4 f) J1 W8 m8 c# m" m2 Y5.39.217.77:8898The photo was taken on the day of inauguration.公仔箱論壇; }( c: q1 i- R% j: q9 T! O E, [
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
$ g0 q7 T) Q# I) |5 PTVBNOW 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。7 R$ B6 q5 @& ~: ~
Question:公仔箱論壇7 ]+ W9 x+ R/ O g$ h" f$ \
& f3 F* I* {2 e7 T% l
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,. l- a+ @" R+ m$ k H' w
Or just the weight of the water?
3 X! ~3 b$ @7 R. f; Mtvb now,tvbnow,bttvb1 l- x" [3 X& M b1 _
Answer: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。- J3 e( g( c- x, S
7 ^8 R: `# z; d8 k' b: C
It only needs to be designed to withstand the weight of the water!
( J n& \* ~# n0 n9 Dtvb 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公仔箱論壇 q" @, ~1 A# E( H" |
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。: F$ H9 @: `3 L& W& m4 v
, ]1 w1 r8 W. H+ |6 ^2 R# sThe Incredible Magdeburg Water Bridge in Germany
4 N* d9 b# b! b8 fThe 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.5.39.217.77:88989 A3 S& |* z, ]5 C, c4 ^
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: i1 X0 n8 j# j3 f' y/ O1 C0 G
5 Z/ i# H+ P9 I" o
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.
- C) g4 h" L/ N7 g# M! U公仔箱論壇
' q2 I& w. C7 Ftvb now,tvbnow,bttvb
; \# X' q7 V) s: B+ v- \( H9 \tvb now,tvbnow,bttvb
; ?) C( |4 r# l' ntvb now,tvbnow,bttvb公仔箱論壇+ Q2 [4 R8 O0 _ D
. L4 S2 S( C1 O
7 L+ j, B, q0 g3 Z: G; o# b! C1 w
/ n8 ^9 b8 `' d. L5 A3 ~
6 a4 I4 m7 ~( e3 ^" | |
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
|