I recently bought a new scroll saw and was commenting to someone about how it was a relatively slow saw... low ... RPMs (thinking like a circular saw). Then it occurred to me that not being a circle, the blade movement wouldn't really be measured in RPMs.
So I was trying to think what it would be measured in, and I realized it is moving up and down, oscillating, essentially like a wave... so thought maybe it would be measured in Hertz?
I looked up measures of frequency, and this article says that Hertz apply to physical waves such as sound (as well as EM waves). Technically this is not actually a sine wave, but it is essentially an oscillating movement.
So I was just wondering, would Hertz be the correct unit of measure for the movement of the blade on a scroll saw?