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Oscilloscopes measure frequency, and by dividing that frequency by three, [Frank] calculated his fidget spinner was spinning at the remarkable rate of 2200 RPM. Is this a stupid use of expensive ...

But by the time she figures out something’s a fad, it is old news. So maybe you got a fidget spinner in your stocking this year. Beats coal. Before you regift it to your niece, you could ...

Fidget spinners are everywhere these days. You can buy them on any street corner for a few dollars, and both kids and adults are obsessed with them. The companies that make these hot new gadgets ...