A magnetic field can exist without electricity, as demonstrated by lodestone, yet the relationship between electricity and magnetism remains complex. While electricity generates magnetism, the presence of a magnetic field does not always indicate the presence of an electric field. The frequency of electromagnetic waves can characterize both electrical and magnetic components, but additional information is required for accurate characterization in materials. In a vacuum, understanding one component of electromagnetism provides insights into the other, but this relationship is less straightforward in materials. Ultimately, magnetism and electricity are intrinsically linked, with each influencing the other.