Viewers like you help make PBS (Thank you ๐) . Support your local PBS Member Station here:
Unlock the secrets of Feynman Diagrams. Part 5 in our Quantum Field Theory series. And if youโre submitting an answer to our challenge question email your answer by August 2nd to pbsspacetime [AT] with the subject line โFeynman Diagram Challenge.โ
You can further support us on Patreon at
Get your own Space Time tยญshirt at
Tweet at us! @pbsspacetime
Facebook:
Email us! pbsspacetime [at] gmail [dot] com
Comment on Reddit:
Help translate our videos!
Previous Episode:
The Real Star Wars
Feynmanโs 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 โ including the impossible paths! In fact we can go even further: according to Feynmanโs 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 OโDowd
Produced by Rusty Ward
Graphics by Kurt Ross
Assistant Editing and Sound Design by Mike Petrow
Made by Kornhaber Brown ()
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 Pagรฉ-Guitard
Nathan Leniz
Jessica Fraley
Loro Lukic
Brandon Labonte
David Crane
Greg Weiss