E_{⊥} (r, t, θ) = \frac{1}{4 π ε_{0}} \frac{\ddot{p} (t - \frac{r}{c}) \sin θ}{c^{2} r}

${E_\perp (r, t, \theta)= \frac {1}{4 \pi \varepsilon_0} \frac{\ddot p (t - \frac{r}{c}) \sin \theta}{c^2 r}}$