Hi Physics Forum, I am a student, doing something about electromagnetic pulses. I want to ask a question: If we find the effects of EM pulses on some systems, is it convenient to use Fourier transformation to make these pulses look like sinusoidal? Or we can use other kinds of transformations like Laplace one. Can you recommend me the simplest books telling ways to calculate with EM pulses. Ah, they tell about the sinusoidal pulse, the Gaussian pulse and the rectangular pulse with the same energy. What does "the same energy" of pulses mean? Thank you very much.