本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.764 U% E6 h! ^* @, y/ d W2 a J
8 @+ o6 b- T1 ^' [ uTVBNOW 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.
4 C- \! n+ e- N5 Z% d5.39.217.76AMAZING!
( D/ C9 S. {; P5 a2 H: I7 E5 f2 v: W/ ?8 G
Even after you see it, it is still hard to believe!: w& B/ r: i5 r' h5 V2 F) P7 x
公仔箱論壇. r6 i+ _/ q e1 P0 _$ ?& E
2 o7 S0 E! ]6 P- S6 q5 vMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.762 o! d+ `; Z6 f: n" w4 z
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( M! K6 S. k4 Z* @1 X) t( e
It is located in the city of Magdeburg, near Berlin.
) F" J3 R4 I, V( r5.39.217.76公仔箱論壇9 a& C1 X; |+ m/ b- E4 k6 I( O
The photo was taken on the day of inauguration.
7 E0 a" r* @/ Z% J& Stvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
1 I. `" b" q$ o) w
/ N, p P# ~/ V) \6 @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。Question:5.39.217.766 O: c! ]4 O0 s6 O' Q$ O
( \: r9 c, _9 F公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
1 _+ C- E! S3 u% V' rOr just the weight of the water?
* U+ {' H5 m* k f! M公仔箱論壇* s/ Y3 U( U; o7 Y. \" e
Answer:
# X5 o: X W9 R
: D( \* q* U* J7 mIt only needs to be designed to withstand the weight of the water!
: Z* }, w8 Y/ N- c( U5 o) x公仔箱論壇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公仔箱論壇0 H/ [+ |+ v+ ^' Z! S
/ @# W a" G: h H( u, dtvb now,tvbnow,bttvb公仔箱論壇- `! Z; Q3 M8 P& r' ]" Z4 N6 w. H5 N
The Incredible Magdeburg Water Bridge in Germany
% M" K' u2 A0 D% ^6 |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.tvb now,tvbnow,bttvb! K$ L6 F6 w5 b
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.
k D1 N" B6 b' x6 B# T2 b2 ~( stvb now,tvbnow,bttvb
. m z# h! z) X# l3 @2 ^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。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+ `& y O7 x/ t5 i6 }' HTVBNOW 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。
' U! W- n' ^2 h4 d% d( V. @8 t# 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。公仔箱論壇0 } j" c* n( [# l ?
) E0 a& R% R2 E2 t# b* W, _
& F" w0 Q# U" z2 m: o/ r5 P
3 R: b% p5 p0 J' `tvb now,tvbnow,bttvb
! L' w: E2 b1 K7 a
% `' \$ t4 B1 w! J; F+ W公仔箱論壇
0 U" w- W% |( v& F( y' ?4 y9 ]$ u
7 F7 U' e8 D" V9 ?) P7 ]+ n5.39.217.76 |
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
|