P3H4O1T1O1C3A1T1H4O1D2E1
23 points
PHOTOCATHODE is validvalid
[n PHOTOCATHODES]
a cathode that emits electrons when exposed to radiant energy and esp. light [n -S]
[n PHOTOCATHODES]
a cathode that emits electrons when exposed to radiant energy and esp. light [n -S]