How Touchscreens Work

Why can you text with your finger, but not with a q-tip? The physics of smartphones is a complicated and amazing mixture of engineering, physics, electronics and computer science. Support Dianna during her recovery → https://www.patreon.com/physicsgirl Creator: Dianna Cowern Research/Writer: Sophia Chen Editor: Jabril Ashe & Dianna Cowern Animations: Kyle Norby Videography: Cathy Cowern Thanks to Dan Walsh and Marcel Stieber http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl