Bike Anti-Porn - When Things Go Wrong

I think 24 spoke wheels should appear stationary at approx 10mph under a 50Hz strobe, per street lighting, but also at 24/25 of that speed and 23/24 of it

This is obvious bollocks. If it takes 1/50s to rotate 1/24 of a revolution, the next time it will appear stationary is when it takes 1/50s to rotate 2/24, i.e. at approx 20mph. Just thought I should clear that up.