Nina and the Neurons Go Inventing - Sliding Doors

Nina looks at different household inventions and finds out how they work. With the help of her trusty neurons she examines the items to answer children's questions Can an automatic door tell the difference between a real person and a cardboard cut-out? If you want to know the answer, watch Nina and the Neurons Go Inventing where Gordon and Christopher ask: How do automatic doors know when to open? In this fun episode, lovely Luke helps Nina find out how automatic doors work. With an exciting trip to see a special helicopter that uses the same science, Nina and the Inventors learn all about infra-red sensors. So if you want to know about automatic doors and find out how to make a sliding door of your own, tune in to today's episode.