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The early units consisted of a germanium crystal touched by two closely spaced fine wires—‘cat’s whiskers.’

She smiles and her cuts outline her face like a cat’s whiskers.

Over the last century, physicists have learned to explain some of the grandest and subtlest phenomena in nature — the arc of a rainbow, the scent of a gardenia, the twitch of a cat’s whiskers — as a handful of elementary particles interacting through four basic forces, playing a game of catch with force-carrying particles called bosons according to a set of equations called the Standard Model.

Q. How come my cat’s whiskers are striped, with bands of white and brown on each one?

It is 42 years this week since we first appeared together on a junior club show in Streatham, south-east London, at a boxing hotbed called The Cat's Whiskers.