Before we all lost remotes down the sofa, engineers tried wild ways to change the channel from the comfort of an armchair. Can you put these flicker innovations in the right order?
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Which English mathematician and cleric first proposed the reformed grave calendar adopted as the Gregorian in a 1582 treatise submitted to Rome?
π History Β· 26 votes
Which British inventor created the first successful mechanical television system, giving a public demonstration in London in 1926?
π History Β· 26 votes
Which UK moth species is famous for having a caterpillar that mimics a twig so precisely it can hold itself rigid at an angle for hours?
πΏ Nature & Animals Β· 25 votes
Which insect inspired the design of a tiny flying robot developed at Harvard, known as the RoboBee?
π³ 25 votes