Nina looks at different household inventions and finds out how they work. Friends Gordon and Christopher ask Nina how automatic doors know when to open. Show more
Discover 11,128,835 listings and 279,916 playable programmes from the BBC
Nina looks at different household inventions and finds out how they work. Friends Gordon and Christopher ask Nina how automatic doors know when to open. Show more
The UK's most watched and most loved channel for the under-sixes, dedicated to delighting and surprising its pre-school audience.
