How to pronounce “scale factor” in English

The definition of the redshift is that 1 plus the redshift is simply the scale factor of the universe-- the distance between two clusters

Then there are four sub parameters, like number of octaves, octave scale factor, and so on, which allow me to fine tune the intensity and scale

But if you have a dense universe, then the separation between two arbitrary clusters of galaxies-- the so-called scale factor-- it increases, but at a slower rate

A given red shift is simply the size of the universe now, divided by the size of the universe, or the scale factor, as it was when the light was emitted.