Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old September 15th 09, 08:02 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Mar 2007
Posts: 3,521
Default Spherical radiation pattern

Szczepan Białek wrote:

"Cecil Moore" wrote:
How can they possibly do that while traveling at
"0.024 cm/sec"?


Only in students homework.


So what speed do your measurements indicate for
free electrons on an antenna?
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com
  #2   Report Post  
Old September 16th 09, 09:02 AM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: May 2009
Posts: 197
Default Spherical radiation pattern


"Cecil Moore" wrote
...
Szczepan Białek wrote:

"Cecil Moore" wrote:
How can they possibly do that while traveling at
"0.024 cm/sec"?


Only in students homework.


So what speed do your measurements indicate for
free electrons on an antenna?


You assume: "The value for conduction electrons / m^3 matched the number of
atoms / m^3, within the error of the copper's density"

It is not true. So the speed for steady current is bigger.
But in antennas is oscillating current. To describe the electrons one must
take into account acceleratin and compressibility. Speed at small movements
can be small but acceleration huge.
S*

Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hustler G7-144 vs G6-144 vs dipole radiation pattern Nate Bargmann Antenna 5 September 22nd 07 02:51 PM
Radiation Pattern Measurements Jerry Martes Antenna 0 February 19th 07 12:06 AM
Measuring beam radiation pattern Bob Freeth Antenna 0 September 12th 05 03:57 PM
Vertical Radiation Pattern? jimbo Antenna 1 July 17th 05 12:07 AM
Visualizing radiation pattern Jim Antenna 2 April 17th 05 03:59 PM


All times are GMT +1. The time now is 12:45 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017