I never really got the hang of Laplacians, which are fundamental to the motivation behind and study of harmonic functions. But here’s a short Khan Academy video

I never really got the hang of Laplacians, which are fundamental to the motivation behind and study of harmonic functions. But here’s a short Khan Academy video I just watched which gives a nice intuitive explanation of the Laplacian operator: https://youtu.be/EW08rD-GFh0 https://youtu.be/EW08rD-GFh0