[Elecraft] Maxwell's Equations.

[Tom Azlin N4ZPT]

Does not offend me Jim!

Was just puzzled.

The math is hard having forgotten most of that myself especially as I 
only barely understood it back in college 40 years ago. The book I am 
reading, "The Maxwellians," is more a science history book than a book 
on the equations themselves. Interesting reading about the scientists 
and how they worked this out.  How some ideas survived and some did not.

73, tom n4zpt




On 3/10/2011 10:56 AM, JAMES ROGERS wrote:
> I am sure what you say has value Tom. It just seems this one has been
> going on a while. It did prompt me to go out and look up Maxwells
> equations just to see what you were all talking about and it is
> interesting but the math is certainly over my head.  I hope my
> comments did not offend anyone. If so, I apologize, sincerely.
>
> 73s Jim On Mar 10, 2011, at 9:42 AM, Tom Azlin N4ZPT wrote:
>
>> Sorry you are not enjoying the thread James.
>>
>> Seems like many of the email on this reflector has nothing to do
>> with the K3. I'm an average user of the K3 (and an in progress K2
>> builder). Talking about the actual equations and the history of
>> their development seems to me to be of general interest to many of
>> the readers of this list given the other responses.
>>
>> 73, tom n4zpt
>>
>> On 3/10/2011 10:06 AM, JAMES ROGERS wrote:
>>> Enough with the Maxwell Equations.... What in the world does this
>>> represent to the average K3 user? . On Mar 10, 2011, at 8:21 AM,
>>> Tom Azlin N4ZPT wrote:
>>>
>>>> Hi Kevin,
>>>>
>>>> What was asserted in "The Maxwellians" was that Maxwell died in
>>>> the middle of a rewrite. It did sound like there was a
>>>> controversy on his particle (or little eddies?) form of the
>>>> equations for a field approach. Perhaps that new version would
>>>> have dropped  the use of quaternions? Have not studied the
>>>> equations since college, perhaps will go find the papers after
>>>> I finish this history book. Thanks for the tip on locating the
>>>> older forms.
>>>>
>>>> 73, tom n4zpt
>>>>
>>>> On 3/10/2011 1:46 AM, Kevin Rock wrote:
>>>>> There was a group which disliked his use of quaternions so he
>>>>> was forced to rewrite the system into other systems.  Most of
>>>>> the work was carried out by others but for him to publish he
>>>>> needed peer review so he caved into the larger group.  I am
>>>>> reading his original work from 1873 and finding it very
>>>>> enlightening.  Even though I have studied the
>>>>> Heaviside-Gibb's version of the Maxwell equations many times
>>>>> the quaternions he used in the original paper were very hard
>>>>> to find.  Luckily they are proliferating online these days.
>>>>> Kevin.  KD5ONS
>>>>>
>>>>>
>>>>> On Wed, 09 Mar 2011 15:31:18 -0800, David
>>>>> Cutter<d.cutter at ntlworld.com> wrote:
>>>>>
>>>>>> I don't recall that from his biography, I'll have to read
>>>>>> it again. Interesting.
>>>>>>
>>>>>> David G3UNA
>>>>>>
>>>>>>
>>>>>>> Hi Kevin,
>>>>>>>
>>>>>>> Was not Maxwell that condensed the hard to understand
>>>>>>> original theory. Was some his disciples, aka "The
>>>>>>> Maxwellians," that finished the theory in the present
>>>>>>> form.  FitzGerald, Lodge, and Heavyside plus others.
>>>>>>>
>>>>>>> Am just now reading "The Maxwellians" that has this
>>>>>>> story.
>>>>>>>
>>>>>>> 73, tom n4zpt
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On 3/6/2011 5:37 PM, Kevin Rock wrote:
>>>>>>>> I have always wondered how he condensed the original
>>>>>>>> twenty equations in twenty unknowns down to just four
>>>>>>>> of them.  The quaternions he used initially were out a
>>>>>>>> favor with the physics community of the day so he
>>>>>>>> needed to get them into vector form.  Heaviside did a
>>>>>>>> good job but how do you characterize a system with
>>>>>>>> twenty unknowns in four equations?  What has been lost
>>>>>>>> in the translation? Kevin.  KD5ONS
>>>>
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>>>
>>> JIM ROGERS, W4ATK w4atk at bellsouth.net
>>> http://web.me.com/jimrogers_w4atk K3/100 P3 K2/10
>>>
>>>
>>>
>>>
>>>
>>
>> ______________________________________________________________
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>
> JIM ROGERS, W4ATK w4atk at bellsouth.net
> http://web.me.com/jimrogers_w4atk K3/100 P3 K2/10
>
>
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