the worldwide outage is a great reminder the amount of of the whole world relies on technological infrastructure. ∇ × H = μ J + μ ϵ ∂ E ∂ t \displaystyle \nabla \instances \mathbf H =\mu \mathbf J +\mu https://mahmoudqahtan.com/%d8%a5%d9%86%d8%aa%d8%b1%d9%86%d8%aa-%d8%a7%d9%84%d8%b6%d9%88%d8%a1-internet-of-lighting-iol/