How a mobile phone touchscreen works with a SAUSAGE The Secret Genius of Modern Life BBC
Snack or stylis , SecretGenius, iPlayer Subscribe and to the BBC Watch the BBC first on iPlayer Hannah Fry uncovers the secrets behind the miraculous technologies of the modern world, revealing the mindblowing stories behind their invention. All our TV channels and S4C are available to watch live through BBC iPlayer, although some programmes may not be available to stream online due to rights. If you would like to read more on what types of programmes are available to watch live, check the Are all programmes that are broadcast available on BBC iPlayer FAQ
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