Collision? Interaction? Event? What’s that all about?

This article gives some background on how we physicists use these three terms to talk about collider physics experiments.

http://news.fnal.gov/2012/07/collision-interaction-event-what-s-that-all-about/, by Don Lincoln..

Why study the cosmos?

The “Cosmic Frontier”

Perhaps that is one of those “duh!” questions. After all, humans have wondered about the cosmos for all of recorded history and no doubt long before writing was invented. But there is a modern component to this query.

http://news.fnal.gov/2012/06/why-study-the-cosmos/, by Don Lincoln.

Quarks and gluons and partons, oh my …

The proton consists of a complex mixture of quarks and gluons. Physicists use the word parton to describe all constituents of a proton.

Quarks and gluons are more generically called “partons.”

http://news.fnal.gov/2012/05/quarks-and-gluons-and-partons-oh-my/, by Don Lincoln.