The Inertia of Light. Newton's Equation in 4 Dimensions.

Isaac Newton and James Clerk Maxwell were giants in the history of physics. Newton in his century (1643 – 1727) and Maxwell about 150 years later (1831 – 1879) in his own century. Newton has built his theories, based on the deep and profound wisdom in nature and religion. For this reason, Newton has been called the last magician in his time. Maxwell represents modern physics and he has built his theories only on pure mathematics. Based on Newtonian Physics it is possible to reach much further in physics than the achievements based on a simple Maxwell’s mathematical approach. Newtonian Physics gives a new insight in the fundamental physics of Light, Electromagnetic Fields, Dirac’s relativistic Quantum Physics and Einstein’s General Relativity. All we know about light, and in general about any electromagnetic field configuration, has been based only on two fundamental theories. James Clerk Maxwell introduced in 1865 the “Theory of Electrodynamics” with the publication: “A Dynamical Theory of the Electromagnetic Field” and Albert Einstein introduced in 1905 the “Theory of Special Relativity” with the publication: “On the Electrodynamics of Moving Bodies” and in 1913 the “Theory of General Relativity” with the publication ”Outline of a Generalized Theory of Relativity and of a Theory of Gravitation”. However, both theories are not capable to explain the property of electromagnetic mass and in specific the anisotropy of the phenomenon of electromagnetic mass. To understand what electromagnetic inertia and the corresponding electromagnetic mass is and how the anisotropy of electromagnetic mass can be explained and how it has to be defined, a New Theory about Light has to be developed. A part of this New Theory about Light will be published in this article.The New Theory about Light has been based on one single fundamental property of our Universe. The unique property that there has always been, is always and will always be a perfect equilibrium within our Universe. Isaac Newton has discovered this fundamental physical law already 300 years ago by his third law in physics. “For every action there is an equal and opposite reaction”. In the New Theory this law of Equilibrium has been extended for any arbitrary Electromagnetic Field Configuration, which requires the fundamental Universal Property: “The total algebraic sum of all force densities will always equal zero at any time at any spatial coordinate in any spatial direction”. To develop a set of 4 electromagnetic equations, describing all the force densities within any arbitrary electromagnetic field configuration, the Divergence of the 4-Dimensional Stress-Energy Tensor has been taken, resulting in the 4-Dimensional Electromagnetic Vector Equation with the fundamental requirement: “The the total algebraic sum of all force densities equals zero at any time at any spatial coordinate in any spatial direction”