What Is a Lie Detector?

What Is A Lie Detector? Join us today as we learn about how this fascinating machine works. Sources: https://science.howstuffworks.com/question123.htm   https://www.bbc.com/news/magazine-22467640   https://virginia.pbslearningmedia.org/resource/nvsn6.sci.tech.polygraph/how-does-a-polygraph-test-work/  Send us listener mail!  Send an audio message: anchor.fm/inquisikids-daily/message  Send an email: [email protected]