Strobe discs are typically used with some kind of an electric light powered by AC current. Flashlights won't work, and most users do not pay up for a calibrated strobe flasher. The AC-powered electric light will flutter or blink at twice the AC frequency. The 60 Hz driven light will flutter faster than the 50 Hz driven light, and so the dot spacings on the strobe disc need to be spaced closer together for 60 Hz.
What's the difference between 33 1/3 60 vs 50 Hz?
This question comes from a previous post concerning a free strobe disk. At the site there is a 60 hz and a 50 hz version. I thought the hz is the # of AC cycle or at least is a measurement used for electrical purposes. The 33 1/3 is RPM's. Why are these measurements of 2 different entities used to make 2 different strobes. I understand why you need a different one for 45 or 33 but don't understand the difference that hz makes. Can someone explain this simply?