Results 241 to 250 of about 852,321 (277)
Some of the next articles are maybe not open access.
Applied Optics, 1972
A single light source-single detector spectrophotometer has been constructed to record continuously transmissivity or reflectivity as a function of wavelength. This instrument is especially useful for thin film samples of small areas glued to substrates, when it is difficult to produce a similar glue layer for the reference beam.
H A, Washburn +2 more
openaire +2 more sources
A single light source-single detector spectrophotometer has been constructed to record continuously transmissivity or reflectivity as a function of wavelength. This instrument is especially useful for thin film samples of small areas glued to substrates, when it is difficult to produce a similar glue layer for the reference beam.
H A, Washburn +2 more
openaire +2 more sources
Multichannel storage spectrophotometer
Medical & Biological Engineering, 1971An 8-channel storage spectrophotometer is described which has been developed to cover the spectral range of 440–730 nm. Eight interference filters, each of a specific selected wavelength in this range, are placed above eight solid state light detectors.
E J, Brach, W S, Reid
openaire +2 more sources
New Reference Spectrophotometer
Applied Optics, 1973A new single beam spectrophotometer is described in which transmittance is measured by placing samples normal to a parallel beam of light. Collimation and focusing of the main beam are achieved by means of off-axis parabolic mirrors. The wavelength at which the transmittance is to be measured is selected by a plane grating monochromator having off-axis
K D, Mielenz +3 more
openaire +2 more sources
Testing Spectrophotometer Linearity
Applied Optics, 1968It is shown that the linearity of the photometric scale of spectrophotometers is not self-evident. The widely used Lambert-Beer test does not give a conclusive proof of linearity. Light addition methods do not show this disadvantage. In the form of the supplementary light method, as used here, they are suited for testing commercial instruments.
openaire +2 more sources