How do touch screens work? - Science Short

How does a piece of glass know where your finger is? Brooklyn, aged 10, from Cammeray has an excellent question: how do touchscreens work?

Join Christie as she peels back the layers of this everyday technology, uncovering see-through electrical pathways, glass that gets a 400-degree salt bath, and the surprising role your own body plays in every tap, swipe and zoom. Discover why gloves and water can confuse a touchscreen, and how a cracked screen can sometimes keep working.

Got a science question you’d like Christie to investigate? Send it to [email protected].