Newton’s eye and the needle

Isaac Newton was a relentlessly curious and rather odd individual… not least as he is famous for discovering something that was always there and helping us to understand something we still don’t understand. While his countless theorems have helped us shape an understanding of the lovely place we live, some of his other experiments are a tad more unusual. A fine example being the time he shoved a large bodkin needle into his eye socket and eased it behind his peeper to see what effect it would have. Apparently it causes one to see colourful concentric circles, and to use some pretty colourful language too one would warrant.