.~ With sequential comparison of sample and standard
DEFINITION
Classification: 356/408
With sequential comparison of sample and standard:
(under subclass 402) Subject matter wherein there is a light source and optical means to produce a beam or beams of visible light which may be monochromatic; (a) means to hold, move, and position sequentially either at least two samples or a sample and a standard into the path of the beam, or (b) means to cause the beam or beams to sweep or switch between fixed samples and standards; and electrical detecting and indicating means to note the light transmitted through or reflected from the samples and standards.
