I'm not sure where you got snarky, I'm just giving a little info on the state of scientific development of that particular field at the time. You need plenty of

I'm not sure where you got snarky, I'm just giving a little info on the state of scientific development of that particular field at the time. You need plenty of previous work to get to a theory of electromagnetism, as Maxwell did. If you prefer something a little earlier and more experimental Faraday published his seminal result in 1831. It took him about 10 years of fiddling with wires and magnets. I'm also amazed Which is wonderful! So were 19th century scientists, though, and they also figured it out.