## Dirac's Delta Function

In this video you will learn what the Dirac delta function is. We also derive its properties and make examples.

Learn about the electromagnetic properties of our universe, for example about electric charges, currents, electromagnetic fields and so on.

In this video you will learn what the Dirac delta function is. We also derive its properties and make examples.

Derivation of the wave equation for the electric and mangetic field from the decoupled Maxwell equations in vacuum.

In this physics video, we first derive the two wave equations for an electromagnetic wave (for the E and B field components) and look at their properties.

` $$ A_{\text H} ~=~ \frac{ \class{red}{p} \,{\mu_{\text +}}^2 ~-~ \class{blue}{n} \, {\mu_{\text -}}^2}{e \, (\class{red}{p} \, \mu_{\text +} ~+~ \class{blue}{n} \, \mu_{\text -})^2} $$ `

` $$ U_\text{H} ~=~ v \, \class{violet}{B} \, h $$ `

` $$ f ~=~ \frac{|q| \, \class{violet}{B}}{2\pi \, \class{brown}{m}} $$ `

` $$ T ~=~ 2 \, \pi \frac{ \class{brown}{m} }{ |q| \, \class{violet}{B} } $$ `

` $$ \class{green}{F} ~=~ q \, \class{blue}{v} \, \class{violet}{B} $$ `

In this video you will learn how to determine the direction of the Lorentz force using left/right hand rule and how this force is calculated and related to the centripetal force.

` $$ U_{\text H} ~=~ A_{\text H} \, \frac{I \, \class{violet}{B}}{d} $$ `