What is the most slippy thing in the world?' asks 8 year old Evelyn. Hannah and Adam investigate the science of friction and why it was only given a name just over 40 years ago. Show more
Discover 11,128,835 listings and 279,677 playable programmes from the BBC
What is the most slippy thing in the world?' asks 8 year old Evelyn. Hannah and Adam investigate the science of friction and why it was only given a name just over 40 years ago. Show more