@Alan_Pearce
You might think that and I thought that also because my school teacher told me so. That was until someone mentioned maxwell equations and poynting vectors to me.
I like this video explaining it a bit:
I don’t think much of what I was taught in science at school has turned out to be true.
I bit off topic, but there is a title for some scientist “Particle Physics”, except that when you actually go to study the equations. e.g. “quantum chromodynamics (QCD)” you then find out that particles don’t actually exist, and it is just “fields”. I was a bit amused when a “Particle Physicist” told me “Particles don’t exist”. I then ask, In that case, why did you call yourself a “Particle Physicist”? They just laughed and said, well we thought they existed when be came up with the title, by now we know better.