In an early memoir, which became famous, Lorentz applied for the first time considerations relating to discrete molecules to electric propagation in material bodies, and incidentally arrived at a rational reflection-equivalent for each substance independent of its density.
Sa isang maagang talaarawan, na kung saan ay naging bantog, Lorentz-apply para sa unang panahon considerations na may kaugnayan sa discrete molecule sa electric pagtatanim ng halaman sa materyal na katawan, at hindi sinasadya dumating sa isang makatuwiran pagmuni-muni-katumbas para sa bawat sangkap independent ng kanyang limit.