Hi there! I am currently taking physics and we are in the process of learning about electromagnetic radiation. I am a bit confused as to how exactly an electromagnetic wave is produced. I understand that a periodically oscillating charge produces and oscillating magnetic field which in turn produces an oscillating electric field (so on and so forth) but what I don't understand is why a changing electric field produces a changing magnetic field or vice-versa. If, for example, a charge was moving up and down at some frequency, would the electric field be changing because the charge is changing position or because the change in position of the charge results in a changing magnetic field which in turn causes a changing electric field? Thank you in advance! Please note that we are using algebra and not calculus in our course so if your explanation requires mathematics, please use algebra. Thanks again!