Nina and the Neurons demonstrate how mobile phones work with the help of two young engineers using a model of phone service areas with their phone towers or masts. They explain how signals travel through the air and are captured and relayed to different areas.

Originally released by BBC, 2013. Streaming video file encoded with permission for digital streaming by Infobase on April 29, 2015.

How Do Mobile Phones Work? (2:16); --Signals Travel Through the Air (3:22); -- Mobile Phone Masts and Towers (1:11); -- Model Cities and Villages (2:03); -- Phone Signal Demonstration (1:48); -- Review and Wrap-Up: Mobile Phones (1:58); -- Credits: Mobile Phones: Nina and the Neurons Engineering (0:41); .