Translux chamber
From Tardis Wiki, the free Doctor Who reference
Translux chambers were used by the Daleks in their flying saucers, to bombard with translux beams whichever Daleks remained invisible beyond the normal timelapse after the saucer broke through the light barrier. (PROSE: Inside a Skaro Saucer [+]Loading...["Inside a Skaro Saucer (feature)"])
