Phonograph

The tetroxide has been used to detect fingerprints and to stain fatty tissue for miscroscope slides. The metal is almost entirely used to produce very hard alloys, with other metals of the platinum group, for fountain pen tips, instrument pivots, phonograph needles, and electrical contacts. 

Zirconate compounds exhibit several interesting properties. Lead zirconate—titanate [12626-81 -2] compositions display piezoelectric properties which are utilized in the production of EM-coupled mode filters, resonators in microprocessor clocks, photoflash actuators, phonograph cartridges, gas... 

Poly(vinyl chloride-i o-vinyl acetate) [9003-22-9] has found appHcation in flooring, phonograph records, protective coatings, fibers, and some films and sheeting. Because of their low viscosity and good processabihty, such copolymers constitute the bulk of the vinyl tile market. The total production of PVC copolymers in 1989 was 113,500 t (73) (see Vinyl polymers). 

Mattresses, foundations, and convertible beds 2517 Wood television, radio, phonograph, and sewing... 

Copolymers of vinyl chloride, containing 5 to 40 percent vinyl acetate made by the inclusion of vinyl acetate in the polymerization process, have lower softening points and flow more easily than polyvinyl chloride. They are soluble in ketones, such as acetone, and certain esters for making film from solutions. They are used for phonograph records, rigid clear sheeting, and molding pov... 

Platte,/. plate slab sheet board flat tile (phonographic) disk, (flat) record lamina planchct tray leaf (of a table) flagstone plateau (Bact.) plate culture. 

Spratzkupfer, n. = Streukupfer. sprechen, v.i. t. speak, talk, say. Sprech-maschine, /. talking machine, phonograph. -saah m. hah for speaking, forum, spreiten, v.t. spread, spread out. 

Tape recorder and phonograph drives grinding-machine drives. 

Vinyl chloride Polyvinyl chloride (PVC) Root tile, raincoats, pipe, phonograph records... 

The following has been re-recorded from an old worn phonograph record of which only two were ever made. The master and one copy. Both are old and worn and could only be made audible again on a modem powerful machine. Audibly enough to be transcribed on a soundtrack and herewith partly made public for the first time. Perhaps two or three more playings would erase the last traces of sound. 

Roland Gelatt. The Fabulous Phonograph From Edison to Stereo. New York Appleton-Century, 1965. Source for recorded music in 1930s. 

Compact discs (CDs), which may be found in over 25 million American homes, not to mention backpacks and automobiles, first entered popular culture in the 1980s. But their history goes back to the 1960s, when an inventor named James Russell decided to create an alterna-(5) five to his scratched and warped phonograph records—a system that could record, store, and replay music without ever wearing out. 

During the next four years many additional new polymers were synthesized. Most proved of little commercial value, but the list includes three of the top-ranked popular plastic families - the polyvinyls used for phonograph records and floor tiles polyacrylics (such as Lucite) used in paints, airplane windows and buna N and buna S, two versions of synthetic rubber. Thus few households are not affected by even his early contributions. 

Polyesters are also produced naturally in some animals. In particular, shellac is a natural product that was for many years of major commercial importance as a moulding resin (e.g. for phonograph records) and a varnish. It is a constituent of lac, which is secreted by the lac insect of S. E. Asia and exuded by it onto trees. Shellac, which is obtained by purification from lac, is a complex polyester which can be hydrolysed to polyhydroxylic acids such as 9,10,16-trihydroxyhexadecanoic acid [97],... 

We have updated, edited, and rewritten every chapter in this book and even added two more chapters, qualifying us to use the advertisers mantra, New and Improved. ARer 10 years in the market place, the need to create a third edition came to us like a paper cur from licking an envelope. We were rereading parts of the 1990 edition — the chapters on polymers — and noted we said that a big market for polyvinyl chloride was phonograph records. Later on we said, probably all the wood on the front of your console TV is polystyrene. Well, lifestyles change with time and so do technologies, stimulating us to produce a new, more usehd edition. 

Novolac on heating with formaldehyde undergoes cross linking to form an infusible solid mass called bakelite. It is used for making combs, phonograph records, electrical switches and handles of various utensils. 

The commercial applications of osmium are limited and considerably fewer than other platinum group metals. Its aUoys are very hard and are used to make tips of fountain-pen nibs, phonograph needles, and pivots. The metal also exhibits effective catalytic properties in hydrogenation and other organic reactions. Such catalytic apphcations, however, are limited and osmium fads to replace other noble metals, particularly paUadium and platinum, which are more effective as catalysts and cost less. 

Germano, C. P. (1959). A study of a two-channel cylindrical PZT ceramic transducer for use in stereo phonograph cartridges. IRE Transactions on Radio, July-August 1959, 96-100. 

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