For the Record: Amazing relation between Record speeds

[AE_Stereo]

Vinyl records typically come in three speeds: 33, 45 and 78 RPM (rotations per minute).

I just stumbled upon this on the net!

 

[Tinman]

Apparently it took someone 46 years to figure that out.

 

[caution]

It's actually 33 1/3, so not quite