Blog Categories

About Us

AceMagnetics.com has become the premier magnetic bracelet, copper bracelet and magnetic jewelry online catalog as a result of our commitment to one simple tenet - customer service.
Continue

Recent Posts

Blog Archive

  1. April 20081 Posts
  2. February 20083 Posts
  3. January 200811 Posts
  4. December 20074 Posts
  5. September 20072 Posts
  6. August 20071 Posts
  7. July 20073 Posts
  8. June 20079 Posts
  9. May 200719 Posts
  10. April 200734 Posts
  11. March 200748 Posts
  12. February 200722 Posts
  13. January 20077 Posts
  14. December 20061 Posts
  15. November 200622 Posts
  16. October 200611 Posts
  17. September 20062 Posts
  18. August 20065 Posts

Oct 21

Electromagnetic Waves, Sunscreen and Beach plans...


  Perhaps the greatest theoretical achievement of physics in the 19th century was the discovery of electromagnetic waves. The first hint was an unexpected connection between electric phenomena and the velocity of light.

 

    Electric forces in nature come in two kinds. First, there is the electric attraction or repulsion between (+) and (-) electric charges. It is possible to use this to define a unit of electric charge, as the charge which repels a similar charge at a distance of, say, 1 meter, with a force of unit strength (actual formulas make this precise).

 

    But second, there is

 

Posted by Jay Roberts at 06:39 AM | Permalink

TrackBack

TrackBack URL for this entry:
http://site.acemagnetics.com/blog-mt/mt-tb.fcgi/23

Post a comment

(If you haven't left a comment here before, you may need to be approved by the site owner before your comment will appear. Until then, it won't appear on the entry. Thanks for waiting.)