View Single Post
  #5  
Old 28-10-2014, 11:22 AM
DavidTrap's Avatar
DavidTrap (David)
Really just a beginner

DavidTrap is offline
 
Join Date: Jun 2009
Location: Brisbane
Posts: 3,045
I seem to recall something like this from high school physics. Think the teacher was using some printed gratings with several hundred lines per mm???

DT
Reply With Quote