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.
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.
General Note
Originally released by BBC Worldwide Learning, 2009.
Streaming video file encoded with permission for digital streaming by Infobase on September 22, 2020.