The world’s top particle physics lab said Friday it had measured the decay time of a particle known as a Bs (B sub s) meson into two other fundamental particles called muons, which are much heavier than but similar to electrons.

Particles: all the elementary particles in the standard model of particle physics (and many non-elementary particles too) (free .pdf)--print your own for free or order posters, with lots of related charts!

An overview of the various families of elementary and composite particles, and the theories describing their interactions

Standard Model of Elementary Particles - Subatomic particle - Wikipedia, the free encyclopedia

The Top Quark, also known as the t quark (symbol: t) or truth quark, is an elementary particle and a fundamental constituent of matter. Like all quarks, the top quark is an elementary fermion with spin-1⁄2, and experiences all four fundamental interactions: gravitation, electromagnetism, weak interactions, and strong interactions. It has an electric charge of +2⁄3 e,[2] and is the most massive of all observed elementary particles.

Who would not need this backpack? This has taken "geek" to a new level. I reworked the image referenced below and printed on Cotton-linen canvas (Spoonflower). A true sp.

Image credit: Wikimedia Commons user Zhitelew, of the particle masses for the standard model particles.

The Official String Theory Web Site, great explanation, she has a tongue in cheek style i enjoy.

Quantum Physics - Subatomic particles

Stuff that makes me feel stupid! - Schematic presentation of the fundamental particles of the Standard Model of Particle Physics.

The 11 Most Beautiful Mathematical Equations

The Standard Model Lagrangian equation - Encapsulating that theory's description of all elementary particles found to date.