Processor Allocation Using a Reservation Technique in Hypercube Computers

This invention relates to the determination of particle size distributions in fluid mediums; and more particularly, to the use of a system in which polarized light is scattered by the particles and therefore depolarized, and the degree of depolarization is related to the particle size and wave-length of the light. In one form of the invention, the intensity of light which has its optical axis normal to that of the polarized light and which has been scattered in a backward direction, is measured and compared with the intensity of light which has its optical axis parallel to that of the polarized light and which has been scattered in the aforesaid direction. The ratio of the intensity of the normal polarity light to the parallel polarity light represents the degree of depolarization of the scattered light. The wave-length of the polarized light is varied while the concentration of particles in the fluid is held in constant. The particle size distribution is determined from changes in the degree of depolarization.