A photocell in the form of an electron tube with a photoemissive cathode.
More example sentences
- Aliquots of 2 mL of the virus-photoproducts solution were placed in quartz phototubes, capped, and bubbled with oxygen for 5 min before being irradiated.
- Firefly flash and locomotion were observed using IR illumination that did not effect the phototube.
Definition of phototube in:
- The US English dictionary