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Fine Art Particle: Improvements in the beneficiation of ceramic w materials are probably no less important than ie development of new ceramic materials. For :ample, kaolins that have been subjected to caching and particle size selection are being used stead of the more expensive titanium dioxide in e coating of fine art particle paper; and improved particle lection of flint has made possible the develop-ent of higher strength porcelains. There have :en improvements in the selection and grinding
nepheline syenite for fluxing glasses and ceramies. Potting clays have been improved by particle selection and purification.
Thus, an alpha particle is a helium ion and it consists of two protons and of two neutrons. Relatively speaking an alpha particle is extremely heavy and though it does not possess any appreciable power of penetration (a typical alpha particle travels at something less than one tenth the velocity of light and would be incapable of passing through this sheet of paper) it does have very great ionizing effect on any material which it penetrates.
It is from these exper ments that the era of electronics and the sciem of elementary particle physics can be traced. ] fact, the development of elementary partic physics has required increasingly sophisticate vacuum techniques. Particle accelerators requi: evacuated chambers so that the particle beir accelerated will not dissipate its energy by collii ing with other particles. This need has serve as a major stimulus in the development of tl art of creating vacuums. |
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