absorptiometer
wavemeter
roentgenometer
ondoscope
spectrophotometer
heliograph
ionization chamber
ionization tube
lucimeter
radiograph
illuminometer
irradiometer
transilluminator
bolometer
actinometer
photoradiography
reflector
reflectometer
spectrohelioscope
dosimeter
spectroheliometer
pyranometer
exposure meter
telespectrograph
photocell
photoconductive cell
electric eye
magic eye
ray
photoelectric cell
microwave radar
radiolocation
radio detection and ranging
radiospectrometer
radar
glass
photometer
interference microscope
penetrometer
coude system
coude telescope
fluorometer
autoradiograph
carcel
radioautographed
radiospectrometric
beampattern
photometrician
otheoscope
Fizeau-Foucault apparatus
autoradiography
Geiger counter
subreflector
metra
speculum
glossmeter
radiometric
pyrheliometer
spark counter
diaphanometer
radiolocator
ultraviolet lamp
spark chamber
ultraviolet source
spectroheliokinematograph
radiocautery
absorptance
cryptoscope
focimeter
API unit
radiation dose
radioprobe
photometrograph
transmissometer
photoradiometer
fluorescent
dacryocystogram
lensometry
radio observation
selenium eye
source of illumination
telephotometer
field
radiographics
photodetector
ometer
photo-
spectroreflectometer
field of view
visometer
scotoscope
absorption spectrum
dynameter
reflection
decametric
radiotransparent
magnascope
radiothermoluminescent