本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
- O8 g* A/ R, |- F x公仔箱論壇8 x; q" e) a y- ^, i
If you are not a Physics person, read on and learn a fact of physics. 3 A2 U8 \) `- n! l! M- l
AMAZING!
# ^8 [4 e! j4 c. b* Wtvb now,tvbnow,bttvb- N8 ?4 P+ {; V; m( x
Even after you see it, it is still hard to believe!8 Z$ ^; M4 v, X5 i. a
6 u, T' G' h. }/ g9 J8 _
公仔箱論壇" \3 g: ~& j3 n2 g6 j
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。 \' t8 u* A' S$ m
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
; W# Q4 J$ d, UIt is located in the city of Magdeburg, near Berlin.
! Y: e0 @* o+ S, f" \/ g% j5.39.217.765.39.217.76' |/ ?) ^1 c7 C- }1 q
The photo was taken on the day of inauguration.6 n8 V1 ~6 i( k& \) a- R7 c! D
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.6 q+ W( b p6 S% i) F
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+ L, H" ~2 E r! z" ~! X
Question:
$ }5 g9 `3 M' |+ Z% T5 K
% p8 e0 n2 ` V2 f7 e: u5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
, c' L% F! G( r1 ^1 I" ?! U/ gTVBNOW 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。Or just the weight of the water? 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。5 [ K; w' W$ y: Y0 R- Z7 D T7 M
: j4 C8 U3 t% i" sAnswer:
7 Q. V; p' Z/ D. p9 t
: B8 b3 d1 q" F; E公仔箱論壇It only needs to be designed to withstand the weight of the water!
1 D! w: T2 O: o/ q Q7 j. r$ 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。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
: L# U6 K+ k2 j2 J* f
7 s Q) U" e5 x( {3 k" F+ s
2 R* |2 |# h2 s公仔箱論壇The Incredible Magdeburg Water Bridge in Germany2 k2 }: C& z( N3 S0 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.
2 c1 I* m! k: @; A) SThe 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.
8 r) d- y ]/ m1 i$ q' Y. W+ D( 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.
8 @& e X/ p) Z2 T1 a/ O; D; z% @; i
7 ?" `, @& r: H5.39.217.76TVBNOW 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。4 L g3 `* ~- n; C+ k9 V; i5 E
8 Q+ Z4 t" k- P8 `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。公仔箱論壇- p8 b) j$ D- U% p% \+ m
. b, G! L$ H# G% J& B% N5.39.217.76
( k, ]: \* c! G& `8 G m/ V6 Z3 K, W. `/ t% T1 ]& [
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。2 d$ k5 I9 ]5 O( o/ C" ]
: N* A' U5 A; n, ^* J" S5.39.217.76 |
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
公仔箱論壇, R9 y$ z( R1 v# L& K; O/ l/ f& f
發表於 2011-10-15 09:35 PM
|