What Makes My Eyelid Twitch?

13 September 2013
Presented by Chris Smith


Human eye


How is an electron microscope tip made to measure 1 atom thick? Why do I sound different on a recording? Why does light slow down in some media? Why is soft water slimy? How do ants home in on my handbag? What makes my eyelids twitch? Plus, how scientists are exploring spider venoms as a source of new insecticides...


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