National Geographic : 1945 Oct
A VITAL PART OF YOUR TELEVISION SET WILL BE A VA TIIIAT'S RIGIT ... NO'rIIN. A, blank, an absence of any thing . . . or, technically, a high vacuum . . . is all-im portant to television. For a high vacuum in a television tube is necessary for control of the electrons that make television a reality. 'I1ie first step in obtaining a high vacuum is pumping tihe air out of the tube. But pumping won't remove enough of it. Il are's here a "getter" of barium, one of the less common mi11 itetlals, cones in-and more air goes out of circulation. Inserted inside the television tube, the barium "getter" isflashed from the outside by electricity. Instantly it vaporizes and entraps the remaining air.* Barium '"getters" were developed by KEMET LABO iAToI':Ss COMPANY, INC., a Unit of LCC, in their re search on metals. Contributions bv LCC to television and electronics do not stop here. Radio, radar, \-ray, hearing aids and other electronic devices have also benefited by tlhe ex tensive research of I C(C nits in the fields of alloys, carbons, chemicals, gases and plastics. V *Irtrirm has a highlyaffinity for oxlgen . . . and other gases. VWhen the "getter" is flashed in television or radio tubes, molecules ofl rhtetallic vtrpor combine with . . . and irnrnobilize... r.ematiin g particles of atir. IThe bariurn, with the "captured" air is deposited as a silvrey filmi inside the tubes. Most I CC products . . . like barirm "getters".. . . are basic rawt materialsfor lmerictanc industry. Just about every business enterprise, from the small corner garageto the!largest steel plant, uses them in one form or another. If you want a description of these products and how thev are used, crile for the booklet E-10 "P'roducts andt I'rocesses of L(CC." BUY UNITED STATES WAR BONDS AND STAMPS UNION CARBIDE AND CARBON CORPORATION 30 East 42nd Street fUp New York 17, N. Y. Principal Units in the United States and their Products ALLOYS AND METALS-Electro Metallurgical Company, Haynes Stellite Company, Kemet Laboratories Company, Inc., United States Vanadium Corporation CHEMICALS-Carbide and Carbon Chemicals Corporation PLASTICS-Bakelite Corporation ELECTRODES,CARBONSAND BATTERIES-National Carbon Company, Inc. INDUSTRIALGASES AND CARBIDE-The Linde Air Products Company, The Oxweld Railroad Service Company, The Prest-O -Lite Company, Inc.