本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 Q$ m: j$ T% F' E
) l7 E w) _. g' |$ z) n4 I# \www2.tvboxnow.comIf you are not a Physics person, read on and learn a fact of physics.
$ x7 `3 a% N7 x- yAMAZING!
0 [. p! k' b& b3 z* o5 _
$ M- |5 j B y0 zwww2.tvboxnow.comEven after you see it, it is still hard to believe! \9 m9 Q! J1 J, |1 n) ]) U( F$ K
& V0 y, C2 e- u, ^1 p) p公仔箱論壇
0 p; e: N- {& ^& ltvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
$ }/ |+ Q/ ^( S6 Itvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。( }, E9 J! d0 R! ^, P! W
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb: h4 P: ?7 G. ]: B! s+ W
5 w$ W1 E7 ^' j6 T3 p9 E+ ~tvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
0 T4 E& \' Q# c( c0 KTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists." l6 ^" \% \6 ?8 y" W: t
公仔箱論壇) A8 v9 y2 T$ O' h& m
Question:
# m4 z% I' w& b/ l2 a0 kwww2.tvboxnow.com
8 _) }" _( z A6 N6 E) e7 G公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
. _$ @0 D% M) o5 r. `+ rOr just the weight of the water? 3 G0 Y- {7 P# p" P) L
: Z& R/ R7 n. w0 C) T7 U0 U9 [& \tvb now,tvbnow,bttvbAnswer:www2.tvboxnow.com& q8 V. @: M/ f! W. o, ]' q. ~
, E& f# D9 F, |2 [3 Q G; wwww2.tvboxnow.comIt only needs to be designed to withstand the weight of the water! ! a( X# B2 B Q( f/ C4 @: d5 g
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded9 n% ^- |" z* V* t; h @
2 u( l- Q4 W' H7 ~, {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。tvb now,tvbnow,bttvb( f: Q4 Q; p7 P; J( \) Y, |
The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb$ n q* u! v6 c1 T, M" B! T8 k
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.公仔箱論壇0 u' C8 V- H( k& Y: V5 I7 |- r
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% \- ~0 P& x& J/ e- F1 n
( X) O* t% e* ?: w) h* D公仔箱論壇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.
+ `1 [7 M7 T2 w2 p2 u
6 l& m" ~% N1 i5 t. a0 Btvb now,tvbnow,bttvb
; W% T- V- e) i2 ~' |( E* stvb 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。& @" \) O$ @ |# t. L
C" ^2 d6 c. S+ f( a! R
$ j+ \ W$ W3 a4 k$ `: G$ A2 d- n/ d) m
% Q) d ^: e7 c" S* ?
tvb now,tvbnow,bttvb5 j- S8 [: A) M& E4 x( L
- p8 j, s4 g; J; P! T7 L" l |
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
|