Description

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/ 

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