A term used in Theosophy. It is believed that magnetism and electricity are derived from the universal energy, Akasha (they spell it without the "h"). However, there is the "small" magnetism (for example, that which is around people) and the greater, or Akasic, magnetism, such as that of the Earth.
Magnetism can be used to create electricity. In fact, it is constantly doing so at various levels. Ultimately, changes in magnetism and electricity on the physical plane are the results of changes in them on the more cosmic plane, all of which leads back to the cause of changes in the magnetic and electric fields as having a source in changes of Akas(h)a.