> Heaviside is pre-Michelson-Morley I just read the 1893 preface to his Electromagnetic theory vol 1 linked in another comment. It mentions the Michelson and o

> Heaviside is pre-Michelson-Morley I just read the 1893 preface to his Electromagnetic theory vol 1 linked in another comment. It mentions the Michelson and other experiments and talks about how to accommodate them (in now-unfamiliar terms I don't understand).