The Secrets of Feynman Diagrams
July 27, 2017
839,039
17,771
921
2.23%
Search the Record
IndexedEvery word spoken in this episode is indexed. Type any phrase to jump straight to the moment it was said.
Type any word or phrase that may have been spoken. Click a result to seek the player to that exact moment.
Try a name, a topic, or a quoted line
Pbs Space Time Episodes Around July 27, 2017
See what was published immediately before and after this episode.
14:25Now PlayingThe Secrets of Feynman Diagrams
YouTube Description
as posted by the channelViewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here
Unlock the secrets of Feynman Diagrams. Part 5 in our Quantum Field Theory series. And if you're submitting an answer to our challenge question email your answer by August 2nd to pbsspacetime [AT] gmail.com with the subject line "Feynman Diagram Challenge."
You can further support us on Patreon at
Get your own Space Time tshirt at
Tweet at us! @pbsspacetime
Facebook: facebook.com/pbsspacetime
Email us! pbsspacetime [at] gmail [dot] com
Comment on Reddit
Help translate our videos!
Previous Episode:
The Real Star Wars
Feynman’s path integral shows us that, to properly calculate the probability of a particle traveling from point A to point B, we need to add up the contributions from all conceivable paths between those points – including the impossible paths! In fact we can go even further: according to Feynman’s approach, every conceivable happening that leads from a measured initial state to a measured final state DOES in a sense happen. To calculate the probability of any quantum system evolving from one state into any other state we need to sum over every conceivable intermediate state. This is impossible because there are infinite possible intermediate states.
Written and Hosted by Matt O’Dowd
Produced by Rusty Ward
Graphics by Kurt Ross
Assistant Editing and Sound Design by Mike Petrow
Made by Kornhaber Brown (www.kornhaberbrown.com)
Comments answer by Matt:
Superphilipp
Lewinham
Myrmidon
Sure people love Star Wars. But I think they missed a golden opportunity to call the project Ronald Ray-gun.
Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:
Big Bang
CoolAsCats
Shane Robinson
David Nicklas
Eugene Lawson
Joshua Davis
Quasar
Tambe Barsbay
Max Levine
Mayank M. Mehrota
Mars Yentur
Josh
Mark Rosenthal
Dean Fuqua
Hypernova
Chuck Zegar
Jordan Young
Ratfeast
John Hofmann
Joseph Salomone
Martha Hunt
Craig Peterson
Science Via Markets
Barry Hatfield
Thanks to our Patreon Gamma Ray Burst Supporters:
Peter Durocher
Michael Kers
Chris Hicks
Mark Vasile
Patrick Murray
Justin Lloyd
Sultan Alkhulaifi
Alex Seto
Conor Dillon
Jared Moore
Michal-Peanut Karmi
Bernardo Higuera
Erik Stein
Daniel Lyons
Kevin Warne
JJ Bagnell
J Rejc
Amy Jie
Avi Goldfinger
John Pettit
Shannan Catalano
Florian Stinglmayr
Yubo Du
Benoit Pagé-Guitard
Nathan Leniz
Jessica Fraley
Loro Lukic
Brandon Labonte
David Crane
Greg Weiss
Guests & Subjects Covered
Sentinel Indexing in Progress
Metadata and chapters are available. Claim extraction for this episode is pending.
All video content is delivered via YouTube embedded players in accordance with the YouTube Terms of Service. Sentinel provides research tools that promote discovery and accountability across political media.