By Brian H. Kaye
The homes of many solids rely on the scale of the debris. for lots of procedures, the uniformity of those debris are the most important (in powder coating and healing aerosol technology), simply because numerous sleek fabrics commence from small debris. Particle dimension dimension is a severe step in powder expertise, because the homes of a powder are established upon its particle measurement distribution. This ebook is helping not to purely clarify the idea of other tools during this procedure, yet presents the solutions had to get trustworthy effects.
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Extra info for Characterization of Powders and Aerosols
14(b). The original profile had some sharp edges which resulted in higher frequencies in the harmonic spectrum being relatively strong. As the rock moved towards a more spherical shape the power of the higher frequencies diminished drastically. With modern computers one can generate the Fourier transform of an actual profile which is technically the same as the Fraunhoffer diffraction pattern of the profile. This aspect of shape analysis of profiles will be discussed in more detail in Chapter 7 when we discuss the use of diffractometers to characterize fineparticles.
As the rock moved towards a more spherical shape the power of the higher frequencies diminished drastically. With modern computers one can generate the Fourier transform of an actual profile which is technically the same as the Fraunhoffer diffraction pattern of the profile. This aspect of shape analysis of profiles will be discussed in more detail in Chapter 7 when we discuss the use of diffractometers to characterize fineparticles. 15(a). This is a highly magnified view of a cross section through a toner bead used in xerographic copiers.
In one technique the fineparticle is allocated the number of the standard circle on a reticule array nearest in size to the fineparticle. a) The appearance of one type of reticule array. b) A sample set of fineparticles with sizes assigned from the reticule of (a). 1 (c) is presented as a histogram. This sample had been made by sieving a powder which had been hammer milled. It is interesting to see that there is a population of very small fineparticles which apparently remained by electrostatic attraction on the surface of the larger particles when they were sieved.
Characterization of Powders and Aerosols by Brian H. Kaye