If the mirror in michelson’s apparatus had had six sides instead of eight, would it have had to spin faster or more slowly to measure the speed of light?

no simpler subs form complex ones. synthesise = make

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.