Home |
Search |
Today's Posts |
#10
![]() |
|||
|
|||
![]()
On Mon, 10 Jul 2017 06:28:08 -0400, Pat wrote:
On Sun, 09 Jul 2017 14:29:18 -0700, Jeff Liebermann wrote: That should be the E and B field, not H field. My mistake. E and H are fine. I think it depends on which books you are reading or maybe how old you are? I remember E and H from school (a long time ago). At this time, I'm 25,384 days old[1]. That's long enough to have forgotten or confused most everything which I had pretended to learn in skool. I'm perpetually mangling the various fields. So, I decided to search for some clarification. This is least confusing explanation I could find: https://www.physicsforums.com/threads/in-magnetism-what-is-the-difference-between-the-b-and-h-fields.370525/#post-2537765 I think I understand most of it, maybe, or at least some of it: https://www.physicsforums.com/threads/in-magnetism-what-is-the-difference-between-the-b-and-h-fields.370525/ There are 114 articles in the thread, most of which disagree with each other. That suggests that not everyone understands the various fields in quite the same manner. E and B are the total electric and magnetic fields. D and H are the free electric and magnetic fields. P and M are the bound electric and magnetic fields.? E = D + P (except that for historical reasons E is defined differently, so we need to multiply it by the permittivity, and for some reason P is multiplied by minus-one). B = H + M (except that for the same historical reasons B is defined like E, so we need to divide it by the permeability). At this point, I usually say "I hope this help". However, I think that "I hope this doesn't hurt too much" might be more appropriate. I look forward to hearing the results. Sounds like a great experiment. I'll post something. Right now, I don't see it happening until after I design and build the one, true, ultimate, and best magnetic loop antenna. Probably next year. [1] http://www.calculator.net/age-calculator.html?today=01%2F10%2F1948&ageat=07%2F10 %2F2017&x=54&y=14 -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Re Magnetic Loop !!! | Antenna | |||
Magnetic Loop !!! | Antenna | |||
MFJ 1786 magnetic loop | Antenna | |||
Magnetic loop for sale | Equipment | |||
Magnetic loop for sale | Equipment |