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getter |
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getterIn vacuum or gas-filled tubes, it is a small, ring or cup-shaped device containing a powdered metal that reacts strongly to oxygen. When the tube is sealed, the getter is fired (heated) to further evacuate a vacuum tube or to remove impurities from the gas. Firing causes the getter material to oxidize and absorb any free oxygen in the tube, which would otherwise oxidize the active electrodes and decrease the tube's life. Tubes with graphite-based electrodes do not use getters, because the graphite itself absorbs oxygen. |
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The top three vote getters are inducted during a ceremony in Pasadena. The following ``Membership First'' candidates were the top 13 vote- getters, which gives all but two a three-year term on the national and Hollywood division boards of SAG: Lou Diamond Phillips, Valerie Harper, Esai Morales, Kent McCord, Seymour Cassel, Bill Daniels, Frances Fisher, Alan Rosenberg, Jane Austin, France Nuyen, and Bonnie Bartlett. Monday night, singer and actor Donny Osmond and Home Media Retailing publisher Don Rosenberg announced the top vote getters in 15 categories of the magazine's second annual TV DVD Awards, which this year drew more than 100,000 separate votes. |
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