Overview
- James Goh, 23, secured a Guinness World Records title by spinning a fidget spinner on one finger for 30 minutes 34.54 seconds.
- The Queens' College Cambridge engineering student built his own "pulsar fidget spinner" and completed the record attempt in Hong Kong.
- The design concentrates mass at the edge with a dense tungsten ring around a hollow aluminum core to raise the moment of inertia and keep the rotor turning longer.
- He drew on coursework in aerodynamics, the science of friction known as tribology, differential equations, and 3D modeling to cut losses and tune performance.
- The time tops the previous mark by nearly five minutes and lasts about 20 times longer than a typical shop-bought spinner.