本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇5 N$ h8 ?9 ^) H4 o0 P1 X$ K* k( x
+ C. _3 j u! Q' nTVBNOW 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.
B; n. S0 A N% P* ^+ _7 {2 LAMAZING! 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。 Y; d0 f9 w+ b5 m( C
! U- Q# \$ O1 ~% I7 \5.39.217.76Even after you see it, it is still hard to believe!公仔箱論壇! K3 h6 h8 E G4 A/ Q
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。* Z; I8 r, S/ j) N+ r9 G
) v( w% ~' C* KMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇7 h) A0 h1 C& N$ S
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; G; {& M- ?' }2 z# S7 |
It is located in the city of Magdeburg, near Berlin.
) i1 M" O0 }9 d' P7 |( H5.39.217.76公仔箱論壇; H! ~5 a! a6 l- `& u! N1 j
The photo was taken on the day of inauguration.$ b( j6 z8 {( R! Z J- ^
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
) ]' [% |4 e9 [+ L: N, [ N0 G5.39.217.76公仔箱論壇6 @. ^1 `/ B5 J
Question:
: R# D; V+ J+ @tvb now,tvbnow,bttvb# X! X& F/ O1 ?
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇- h& ^7 p( h- k
Or just the weight of the water?
; o7 Z- H. C5 {3 I! k. S& k公仔箱論壇
; b8 K+ j |8 a' h8 ]1 q5 Q5.39.217.76Answer:tvb now,tvbnow,bttvb) q7 g1 W& X( \- Y! ?" w7 |
5.39.217.76( Z, b7 H8 N3 _% u* _7 F2 N' A
It only needs to be designed to withstand the weight of the water! . b& o) g0 M% W* k
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
8 b" U+ h: }# a' X1 zTVBNOW 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。
- C! [! a1 p; j公仔箱論壇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。3 e0 G1 T# k' i+ l8 k, M( }, {/ D
The Incredible Magdeburg Water Bridge in Germany; \9 e( N4 @4 P# C6 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.7 m7 Q3 a8 ], R2 m8 m8 e
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. `" l" C$ m* R! i2 u: N
tvb now,tvbnow,bttvb; m- ` [* p8 \) z+ w; v1 C7 O: d
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.
/ i, @; f/ W/ k2 T7 M8 VTVBNOW 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* d, E, ?: M6 p4 Q. W' T
5.39.217.76) m& ^, |4 j% y
1 n. e( Y" t" N$ t8 ]
* P* Y, V. J, e) ctvb now,tvbnow,bttvb
) A- W0 e; z3 E1 a, J公仔箱論壇+ [% E: L) W6 W3 a" ~1 V7 ~* R! r9 w
" t" m: `+ C; I; m4 ]! L
公仔箱論壇5 q9 B8 y h1 c- c; u6 w
+ J0 _9 F, e% J5 T, Mtvb 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
|