Thread: Electromagnetic Spectrum
View Single Post
  #4  
Old November 27th, 2005, 17:10
RobJim RobJim is offline
Senior Member
  
Join Date: Feb 2005
Location: Los Angeles, CA
Posts: 220
RobJim is on a distinguished road
Default
They are a mixture of particles and gamma rays. Take a look at the Wikipedia article I linked.