Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

Create a timeline

Public timelines

About & Feedback Terms Privacy FAQ

Cabinet Get premium

Donate

jan 10, 1921 - Polygraphs

Description:

John Larson develops the polygraph ("lie detector") machine.

Added to timeline:

Sci Vis I timeline

ByWilliam Ibarra

26 Sep 2018

0

0

565

Date:

jan 10, 1921

Now

~ 104 years ago

About & Feedback Terms Privacy FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL