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Physics 3 - Maxwell
Note from the Author
Table of Contents
What is this book
Historical facts
New aspects
Fully erroneous
Incorrectly interpreted

Physics 3 - Chapter 1
Equations
Complex vectors form
The Most General form
The General Solution

Physics 3 - Chapter 2
Solutions
Initial conditions
Non-homogeneous equation
Solution for three-directions
The four laws

Physics 3 - Supplement
Fermat's proof
Beal's conjecture
Pythagorean triples
Inertial mass
Gravity constans big G
What does the Moon look at?

Physics 3 - Final notes
Final notes

Physics 4 - New book
Entry

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Second Edition of "Fizyka 3"
ISBN 978-83-926856-1-6
Fizyka
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1.3.  Derivation of complex form of vector
          for fields E and B

     We have announced in Introduction chapter – Item I.3 the derivation of complex vector form for fields E and B – this is presented below.

     Considering equations (1.8) and (1.9) without field sources,

wr10a, wr10b (1.10)
we can differentiate both sides of both equations with respect to time 't '
wr11a, wr11b (1.11)
then use again (1.10) and insert into (1.11)
wr11c, wr11d
which results in:
wr12a, wr12b (1.12)
     Since our initial form of equation (1.10) was assumed without considering field sources, the values of ∇∙ ( ∇∙ B  ) = 0   and  ∇∙ ( ∇∙ E  ) = 0  . However, leaving these parts in the equations does not change their general features.
The equations (1.12) have identical forms, variables B  oraz E   are separated and equations themselves are expressed in known form of wave equation.
     It can be noted that equations (1.10) exhibit different signs (+/-) but in (1.12) there is no difference anymore. This is no surprise and it was noted in my previous book (Fizyka 2), Opposite signs in equations (1.10) yield the same result as (1.12), since it only affects positive definition of vector cross product, and it is just related to either left or right handed coordinate system.
     But an interesting aspect appeared – how different forms of initial equations (1.10) can yield equal forms of final equations and when/how this equality happens?      
     In order to find the answer to this question, the initial equations (1.10) were replaced by equations representing their sum and difference, and multiplied respectively by coefficients a and b .
wr13 - sum (1.13)
wr14 - difference (1.14)
Reordering the equations to isolate variable E we have:
wr15, (1.15)
wr16. (1.16)
Four new variables were created:
wr17a, wr17b, wr17c oraz wr17d. (1.17)
Coefficients a and b can be arbitrary chosen to reduce number of variables such that:
wr18. (1.18)
This is possible when
wr19 (1.19)
therefore
wr20a then wr20b (1.20)
The same relation is also achieved when:
wr21. (1.21)
Therefore, we can arbitrary choose:
wr22a or wr22b. (1.22)
     We have arrived then to the suggestion that four variables (as shown in (1.17) can be replaced with one which will be named as P 
wr23a or wr23b, (1.23)
where a can be any complex number. It is beneficiary however to facilitate reverse conversion, (i.e. to retrieve back values of  B   and  E   ) to choose, as either only real or only imaginary number.
     The value of wr23c ,  is preferred in this book since equations are shorter and new variable is equal to:
wr24a lub wr24b. (1.24)
Please note when choosing wr24c , then
wr24d , wr24e and following relation applies:
wr25, (1.25)
when choosing wr25a , then
wr25b , wr26c and following relation applies:
wr26. (1.26)
     As mentioned earlier this choice is just related to the choice of either left or right handed coordinate system.


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