In Greek mythology, Phaethusa ("radiance") was a daughter of Helios and Neaera, the personification of the brilliant, blinding rays of the sun. With her sister, Lampetia, she guarded the cattle of Thrinacia[?].
... the channel through their ordinary channels BBC1 and BBC2, using terrestrial signals, and this is seen by some as influential (to a certain limited extent) in promoting ...