本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
( A) F1 A/ V) atvb now,tvbnow,bttvb
; L3 ^- k) t5 E z: I9 V5.39.217.76If 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。* w" Q2 l4 e4 j8 c
AMAZING!
, {! t& {: {, m! o0 k+ \+ e5 |; L公仔箱論壇
* N: E& S, W" }, U, S5 l0 y. r公仔箱論壇Even after you see it, it is still hard to believe!% U( Z8 y) S; q! z" G8 ?' _
8 n. U3 ]9 n1 |+ ?公仔箱論壇6 I+ R8 h! ~) Q" {
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! . z8 u$ B* e" D" e6 o
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. " X9 k4 ~7 ~' k, ]: n
It is located in the city of Magdeburg, near Berlin.: Y% Z: K; a/ v) ?
% X$ M! Q8 x" S& \4 L: x3 P
The photo was taken on the day of inauguration.
7 I) G0 O7 a: O" R8 t5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
& S7 X4 V0 Y+ ^: g {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。
" h8 H7 q9 X, w+ Y/ A1 T& q2 x. HQuestion:
* W5 q, ~0 h3 {+ e2 i0 @
# t: }5 J$ H" p" Y) u) b2 E5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
* y- Q P9 l8 q$ o8 F) Etvb now,tvbnow,bttvbOr just the weight of the water?
% T) s( B* o4 g6 u4 p$ i, D6 _; m: B5.39.217.76
/ S5 z( c: q! X ]& X q+ e: _. }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。Answer:
3 G7 Q0 M& E/ L3 \tvb now,tvbnow,bttvb* v" L/ h$ S5 E9 l z
It only needs to be designed to withstand the weight of the water!
4 e. v* F% |7 S; k& 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。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 U- B, C2 K" X- Etvb now,tvbnow,bttvbtvb now,tvbnow,bttvb+ F3 [' H8 c$ u
tvb now,tvbnow,bttvb8 |" Y$ V* v0 k& F) h2 o1 R4 X8 `% j- H
The Incredible Magdeburg Water Bridge in Germany
; Q: ?: }# J9 R; TThe 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.
6 e( \. ^+ m2 u8 }3 Y5 l+ A公仔箱論壇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. , d; f7 @$ |0 @+ p' [& X; W
9 q5 O7 [& u1 j9 v( M5 y) a* b
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.
' f) z {; b, h0 D2 c, c" F公仔箱論壇公仔箱論壇) _; U8 E7 l) Y O
) @5 L6 L1 I6 [3 \& K G5.39.217.76" k0 _% n+ O6 ^! E7 C( }
/ I' b: q( k& I) n3 ITVBNOW 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。
5 e P) \" U' l& }0 Ntvb now,tvbnow,bttvb5.39.217.76, r* m; i% |. X) A8 W
2 s& E. {7 R; _ T8 ]1 L7 r" tTVBNOW 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。$ j5 k: J5 p' s3 q ?. ~3 ~& Y
4 w$ G$ M, c9 ] q; D, }7 C8 Y
|
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
) |4 h9 D6 R" o. P7 x0 [
發表於 2011-10-15 09:35 PM
|