We’ve all done it – put your make-up on and left the house feeling okay, even not bad, and then looked into a mirror later to see an entirely different face staring back at you.
It happens to me every day when I go to the work loos. Somehow, the person in that mirror has aged several years and has really, really bad make-up.
But now I know the answer – and it’s all to do with physics. Continue reading “The general theory of mirrors”