It's not a helpful one-line reply; you could at least have offered up a link or reference to your suggested place to study. It's also wrong in that you use "Lo

It's not a helpful one-line reply; you could at least have offered up a link or reference to your suggested place to study. It's also wrong in that you use "Lorenz" (as in Ludwig, the Danish one) instead of "Lorentz" (as in Hendrik, the Dutch one). Don't feel too bad; lots of respectable authors have made a similar typo ("Lorentz gauge" instead of "Lorenz gauge"), but it makes your one-liner even less useful as a piece of advice. https://en.wikipedia.org/wiki/Ludvig_Lorenz?oldformat=true https://en.wikipedia.org/wiki/Ludvig_Lorenz?oldformat=true https://en.wikipedia.org/wiki/Hendrik_Lorentz?oldformat=true https://en.wikipedia.org/wiki/Hendrik_Lorentz?oldformat=true