-arises as a result of wave theory of light, as light needs a medium and all

-elastic theories on

-grows following discovery of [lines of force]to explain how forces transmitted, term applied to electrodynamic medium [electromagnetic field]stitched together

-following discovery that dringen waves are fundaments of electricity (Uranescence > ^998e73), electrodynamics need their own aether or else use their own

-its exact relation to lumin. aether is very obscure, a lot of work done to connect the two but to no avail

-then comes Karl Anton Schrader and his Electrodynamic Wave Equation defines well the nature of light, and in an instant optics and electrodynamics are united

-electrodynamic aether and lumin. aether become understood universally as one

-then comes [michelson-morley]experiment which shows classical aether theory as false, Schrader comes up with his Invariance > Electrodynamic invariance by entirely ignoring

-many people refuse to let go, alternate models on aether subject proliferate

-spacetime

-consequence of work of Karl Anton Schrader and his Invariance > Electrodynamic invariance

-enlarged by someone in 1917 who notices adding time to electrodynamic invariance calculations simplifies it

-and who also does not believe there is no aether

-dealt with in its modern form by Invariance > Liang's theory of gravity

-rise of paquet electrodynamics results in introduction of an idea of a paquet electrodynamic aether as a model for it