9000 RPM is faster than your screen refreshes

In a past life I worked on a rocket engine turbopump that spun at 160,000 RPM. It’s crazy to visualize how fast that is. The stresses in the metal are so high that we needed speciality alloys made exclusively for us. The parts are literally ripping themselves apart.

I'm being incredibly pedantic, but 244Hz monitors would refresh faster than the revolutions, right? Or do I misunderstand Hz

i like going to https://makermotor.com/rpm-visualizer/ and bumping up the rate to multiples of my refresh rate and seeing the pattern change.

No wonder idle stop is so important.

Idling at 900rpm or 15cycles per second is a tremendous waste. Somehow I always assumed it was slower.

0.9k RPM is way too fast to be the low end of a machine.