to fields E and B we can apply a and b coefficients from formulas (1.23) i (1.24) to all equations (1.6 – 1.9). We assume the coefficients ![]() ![]() For (1.8) i (1.9), we divide first (1.9) by c2 | |
![]() |
(1.27) |
The sum of (1.8) with coefficient
![]() ![]() therefore | |
![]() |
(1.28) |
We can see that by using the same coefficients
![]() ![]() | |
![]() |
(1.29) |
![]() |
(1.30) |
and consequently, we can express Maxwell’s equations in shorter form: | |
![]() |
(1.31) |
![]() |
(1.32) |
We have assigned the subscript t to variable
J⃗ t
thus designating variable
J⃗ without a subscript for even more general expression by introducing time variable τ=c∙t, therefore (1.32) can be written as: | |
![]() ![]() |
(1.33) |
This equation together with (1.31) present the shortest form of Maxwell’s equations and reduces sizes of resulting equations
in subsequent operations. . 1.5. Even More General Notation of Equations Therefore, equation below | |
![]() |
(1.34) |
represents Maxwell’s equations as well, so both versions, (1.33) and (1.34) should be always presented. However, both versions can be written in one equation when we square both sides of equations which yields: ![]() | |
![]() |
(1.35) |
This is interesting expression, and perhaps can inspire some philosophical reflections on the essence of Maxwell’s equations. It can be noted that ![]() ![]() Expression (1.35) includes both possible versions (1.33) and (1.34) thus represents the highest degree of generalization. It should be remembered that variable P⃗ for (1.33) is expressed by ![]() ![]() In search for solutions of Maxwell’s equations it is sufficient to consider only one of the versions. Therefore, in later chapters we will deal only with version (1.33). |