Magnetic fields  03/05/16
The study of magnetic fields are one of the most pertinent applications to the study of physics. Magnetic fields emanate out of the “North pole” of a magnet and emanate towards the south pole of a magnet (so technically the naming of the poles of the Earth are switched around). As a consequence of Maxwell’s equations, moving charges emit electric fields, so there is always magnetism around currents. The magnetic field only has an effect on moving charged particles that are not parallel in direction to it, since the equation for magnetic force is  F=qv x B, With q being the charge v being the charge velocity and B being the magnetic field.

Gauss’ law 03/03/16

 

A very interesting way to find the number of charges in an electromagnetic system is to use a technique known as Gauss’ law. Gauss’ law states that if you were to create a geometric surface surrounding the charge distribution and if you were to summate the normal of the total number of electric field lives going through the surface, you would obtain the charge divided by the vacuum permittivity. To put this symbolically, Eda=q0, We can use this concept to find the electric fields in a much simpler fashion that using coulomb’s law.

Electric force 02/20/16

A most usefull riveting concept found in the study of electromagnetism is the electric force. The electric force is defined as the at-a-distance interaction between two charge particles, described by the equation Felec=q1*q24**0*r2 . As one can discern, the Force is proportional to the strength of the two charges, a constant,  and the square of the distance between them. This equation is kindred in nature to the Universal Gravitation equation, substituting mass for electric charge and changing around the constants, a most intriguing symmetry found in physics. However, there is one glaring incongruity in the fact that the electrically charged particles can be either positive or negative, while mass can only exist in a positive value.