A technician is using a laser which is classed '3B'
6. A technician is using a laser which is classed '3B (Restricted)' within the guidelines of Australian Standard AS2211.1-1997
a) What is the maximum radiant exposure the technician could receive in the 0.20s it takes to blink?
b) If the MPE for the technician is 6mJm-2, what optical density would be appropriate for the glasses she should use?