Theory of Relativity
The Theory of Relativity, as advanced by Albert Einstein, is an overarching framework in physics that encompasses both special and general relativity. It explores how space and time are interwoven into a four-dimensional "fabric" known as spacetime, which can be warped and curved due to the presence of mass and energy. While not exclusively focused on magnetism, it does touch upon this topic in relation to electromagnetism, where electric and magnetic fields are seen as different aspects of the same phenomenon, unified under a four-dimensional spacetime perspective. This theory has profound implications for our understanding of gravity, light propagation, and the large-scale structure of the universe.