本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
, P) r8 q! q: x. T; I6 R( g
. n- r6 t0 h& Y1 [! b: YTVBNOW 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. tvb now,tvbnow,bttvb+ T0 s! O5 D* n- [ J& f" Y
AMAZING! - N4 M5 U) r( t- \6 k# F# g# A# R
2 | L+ c' w6 T, o( E' Q5.39.217.76Even after you see it, it is still hard to believe!5.39.217.76. K4 x" @: x0 g
, x$ N( s. X+ b$ z1 j* k5.39.217.76
% D6 y; a9 m2 s) G# t( YMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! # X' Z- P1 c M
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. # V% D x! l1 q, V; z0 O9 L+ @, O
It is located in the city of Magdeburg, near Berlin.1 a- y0 ?6 ~0 m6 J1 @' d. D
* ]5 ]! [& k+ B( M! C
The photo was taken on the day of inauguration.公仔箱論壇8 p1 j3 |- @5 n( H: R
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
1 i: t6 V4 d5 l. i0 o3 w( F' m5.39.217.768 i' A e0 c% H
Question:
; F2 i! ?* b' e2 Y( \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。
/ v3 R% V6 H4 [; N, T4 d# \tvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.766 ?0 z. _' ]7 k7 u
Or just the weight of the water? tvb now,tvbnow,bttvb e# N' S+ j; e, @4 }: z' W6 X
tvb now,tvbnow,bttvb$ P2 N6 B; e4 }3 e2 b; q" g
Answer:
+ L( U: m* F3 l) P$ ~公仔箱論壇tvb now,tvbnow,bttvb! p8 K* [. A+ k6 D9 n p
It only needs to be designed to withstand the weight of the water! 6 t9 E5 G& l6 l4 ^
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
3 T! a8 n `8 A; B$ I7 l
# Q: ~0 C1 \; Z/ I9 j3 f7 @" e# I4 b1 k
The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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 @9 o; M0 E3 u; m' ~
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." D# l {0 A! m
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. 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。$ A* F+ y7 x# P& h
2 j$ b& a; F; ^* b/ }- R; A! s
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.
2 g) m& N+ a1 o" 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。
- k9 P7 }3 A( A4 p) p公仔箱論壇( ]. M, s7 D; }2 E9 `4 O
* T; a u8 h9 m7 n* J& Htvb now,tvbnow,bttvbtvb now,tvbnow,bttvb* j- j1 z8 c7 l2 V4 S8 U! @
( U/ I5 [- a3 Z$ \
! t- P. ]9 H# v- \
! K% R( t5 J% \/ Z0 |1 G, w; \! f5 P+ c& b. |, I
% b' _5 } T) YTVBNOW 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。 |
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
|