Near-field photometric method and apparatus
Nir absorbance measuring instrument with atr probe
Noise cancellation in fourier transform spectrophotometry
Noise suppressing circuit for use with an avalanche photodiode
Non-contact medical thermometer with stray radiation shielding
Non-electronic gain control
Non-focusing optics spectrophotometer, and methods of use
Non-pressure-dependancy infrared absorption spectra...
Noncontact infrared tympanic thermometer
Noncontacting-type pyrometer
Nonlinear vibrational microscopy