A photoelectric instrument for comparing the concentrations of very dilute aerosols, and measuring low light intensities.
GUCKER
F T
FT
PICKARD
H B
HB
O'KONSKI
C T O
CT
D000336:Aerosols; D004560:Electricity; D004864:Equipment and Supplies; D008027:Light
D000336:Aerosols
AEROSOLS; APPARATUS/photo-electric; LIGHT/measurement