By the way, this is a nice article, but you unfortunately mix up "frequency" and "period" in your quantitative discussion. (A function that repeats every 50 un

By the way, this is a nice article, but you unfortunately mix up "frequency" and "period" in your quantitative discussion. (A function that repeats every 50 units, for example, has a period of 50 units, as opposed to a frequency of 1/50 1/units.)