本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇6 L+ [/ `$ r3 U3 v
( C. `. A$ C# R- B5.39.217.76If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇! k( K! G& R0 p/ y- t9 ~ ^
AMAZING!
( f! }4 w2 _0 t8 g' ^. D7 Q
; r+ w: o+ {( a7 K6 W2 S! ^tvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!5.39.217.76" [0 o$ K8 ]$ ~; a4 o
6 [& x+ _7 g. L% y5 V
5.39.217.76% |5 S+ b; c' _# ^* y
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
. g6 L# V+ @7 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。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$ j2 F+ r) C) _2 T/ A& S" D+ Y- U
It is located in the city of Magdeburg, near Berlin.公仔箱論壇# n) m) B# M1 @$ V
% H K* E: l" A/ _& E) Dtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.8 p @9 l+ O. [$ R1 Q* S, f
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
8 o+ J O/ S# S6 \tvb now,tvbnow,bttvb
3 U' ?4 W8 M3 F, X: K* f! ZQuestion:
! z% X5 [2 L3 S5 o7 i5.39.217.765.39.217.766 S5 B8 W6 J. p' x% X0 X
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
% q; w b" c7 ]; {+ {5 q4 T公仔箱論壇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。( y: ~! L. _$ K$ o" `. L
# P& K/ z; \7 S% {& B! \公仔箱論壇Answer:
5 G2 @3 K7 U1 L; G7 A% E+ J7 z; n; fTVBNOW 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。
, _* N- G2 z- j; n; V3 M, \5.39.217.76It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb7 b- P0 h2 G" H; _
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
m: o+ J) ~& _3 l5.39.217.76tvb now,tvbnow,bttvb. {! K4 G; y s; C6 S5 ~
公仔箱論壇8 Q9 x3 r L: U) P$ N8 j5 e+ H1 s1 x
The Incredible Magdeburg Water Bridge in Germany
7 |* k& @# n6 {0 b; x: bThe 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 o4 b7 R% W5 ?; b# l. u& g: v+ R# htvb now,tvbnow,bttvbThe 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. 5.39.217.766 y- k1 }( v) H% X
( x: f6 {4 b# D. E
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.
S& E0 | q( N0 _+ E3 I8 d, }5.39.217.765.39.217.769 j" D' y/ n$ U5 i- C
" ~) k) t0 R. b( a/ z3 G2 t! m公仔箱論壇tvb now,tvbnow,bttvb( |5 l W1 n/ K3 ]
8 x8 Y7 x0 [' X4 ]5 qtvb now,tvbnow,bttvb公仔箱論壇 X/ H, v4 M0 Z1 |& ^
x! b# m Q4 f+ k: B8 B
5 D! e: V( @+ ^% u. Jtvb now,tvbnow,bttvb
0 L. s. f/ [ E4 J- q9 cTVBNOW 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 a- z0 R$ o+ W; r0 S c5.39.217.76 |
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
7 J; u* F/ G( `2 B( U( @
發表於 2011-10-15 09:35 PM
|