The Light of the Lamps in Almaranrit

Laule brought two mighty lamps for the lighting of the middle earth, which he had built amid the encircling seas. Then varda filled the lamps and manway hallowed them, and the valar set them upon high pillars mar more lofty far than are any mountains of the later days. I mean, a madric imagine that they are the are high enough that their light illuminates the entire earth.