How to pronounce “periodicity” in English

We need time to get over the wars that we generally have had after these revolutions.But the periodicity between the technological revolutions is getting much, much closer together, much shorter.How fast are we moving as a society?

And other technological revolutions have been just as disruptive.Now, as you look at this chart, you see the periodicity between the revolutions is getting shorter.We go from 200 years till 1780, to 100 years till 1870, and on we go.