Discussing error bars - and measuring the speed of light with chocolate. Extra footage: https://youtu.be/9NIvKzAgDGg More links and info below ↓ ↓ ↓ Featuring Professor Phil Moriarty from the University of Nottingham Note from Phil: A crude and basic introduction to the idea of error bars is covered in the video. No mention is made of, for example, the effect of repeated measurements on reducing the standard error, adding in quadrature, or of confidence limits. For a slightly more detailed discussion of experimental uncertainty, see https://youtu.be/ThP51oPttS0 Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Patreon: https://www.patreon.com/sixtysymbols Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com Email list: http://eepurl.com/YdjL9