Physics textbooks and educational websites still contain information saying that elementary particles are point particles. This is not entirely correct. Modern physics theories such as String Theory start with the axiom that all physical entities have spatial extension however small they may be. 526 more words
Tags » Virtual Particles
An introduction to virtual particles
In one of my posts on the rules of quantum math, I introduced the propagator function, which gives us the amplitude for a particle to go from one place to another. 1,779 more words
Quantum Mechanics, Black Holes and Washing Machines
There are many great mysteries in space and laundry rooms. Black holes are now pretty much accepted as fact. For many years it was thought that black holes were like the vacuum cleaners of space. 583 more words
Feynman diagrams in 5 minutes
From my textbook: Feynman diagrams are pictorial representations of particle interactions. These diagrams rely on interaction vertices in representing particular interactions and exchanges between (normally) elementary particles. 422 more words
