The physical plane (actually hyperplane), physical world, or physical universe, in emanationist metaphysics such as are found in Neoplatonism, Hermeticism, Hinduism and Theosophy, refers to the visible reality of space and time, energy and matter: the physical universe in Occultism and esoteric cosmology is the lowest or densest of a series of planes of existence (hyperplanes that are said to be nested).