im looking at a picture. my science teacher told me to figure it out can some1 help?

[vadlamudit]

there is this scientist in front of a black board. and there is this picture with four e's and a 4 arrows and a squiggly line. i would really appreciate it if some 1 helped me! thank you very much. i tried to draw that picture. it is in this web page . but it is in the "science question" section which you can get to in the navigation bar in the top. it's not the greatest picture but...


o lol! i got caught up that i didnt post the website!
it is

www.futurepattyroy.tk or

vadlamudit.tripod.com

[Ambitwistor]

It's a Feynman diagram for positron-electron electromagnetic scattering.

http://musr.physics.ubc.ca/~jess/p200/hep/node4.html