Do our pupils let in more light if we wear sunglasses? - a podcast by Dr Chris Smith

The pupil of the eye dilates in low-light conditions. Does this mean that the same amount is let into the eye when we wear sunglasses? Plus, we ask if babies can tie themselves in knots. Like this podcast? Please help us by supporting the Naked Scientists

Further episodes of Question of the Week, from the Naked Scientists

Further podcasts by Dr Chris Smith

Website of Dr Chris Smith