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Image from page 44 of “Archives of physical medicine and rehabilitation” (1920)
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Identifier: archivesofphysic04ameruoft
Title: Archives of physical medicine and rehabilitation
Year: 1920 (1920s)
Authors: American Academy of Physical Medicine and Rehabilitation American College of Radiology and Physiotherapy American Congress of Physical Medicine and Rehabilitation Radiological Society of North America
Subjects: Physical therapy
Publisher: [Chicago, etc.]
Contributing Library: Gerstein – University of Toronto
Digitizing Sponsor: University of Toronto

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oned tube, consistent opera-tion is possible at somewhat higher thanthe usual voltages. The limit to suchoperation is reached when surges aregenerated by the x-ray tube itself. Itseems probable that the limit of opera-tion of the ordinary form of apparatusemploying a transformer and rectifiermay be partly due to surges from theapparatus, and also partly due to theenhancing effect of the x-ray tube uponsuch surges. (3) An experimental apparatus isdescribed which makes possible the in-vestigation of the entire range of waveform from any x-ray machine. Widerinvestigations with this instrumentshould enable us to determine accuratelyand easily the difference, if any, be-tween the wave forms of commonlyused x-ray machines and in the light ofthese differences, standardization canbe more intelligently affected. (4) It seems possible to developfrom this experimental wave tracer aninstrument for continuous use in x-rayplates to replace the sphere gap as ameans for measuring input energy. Tig. 3

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v ^£ v/ ^<o XXJRNAL O RADIOLOGY A Journal of ideas ami ideals. ruhlMud n.onlhly al Omaha, Nebraska, by the Radiologicall-ubliyliiiiB Conipaiiy lor The Radiological Society of NorthAmerica. SubscripliOM^—Tn the United State.s it.s pos-sessions andMi-.icu, $r..00 yearly: Canada, f5.50: elsewhere, .50 the year .ilverli.-^iiiB rates on application. \ advertisinK niu.si con-luirn lo American Jledical -Association Rules. Iavments for subscriptions and advertising must be made toItadiolOKical rublisbing Co., in New York or Chicago Ex- xn.T .^rthur Annual Meeting T^Hi: UNIVERSAL feeling of all those in attendance at^ tlic annual meeting at Detroit in December was that thiswas one of tSe most profitable meetings ever held by theRadiological Society. The attendance was large and theprogram was exceptional. Only one criticism could possiblyhave been made of the program and that was that there weretoo many papers. This number allowed no time for di

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Image from page 372 of “The American journal of roentgenology, radium therapy and nuclear medicine” (1906)
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Identifier: americanjournroen07ameruoft
Title: The American journal of roentgenology, radium therapy and nuclear medicine
Year: 1906 (1900s)
Authors: American Radium Society American Roentgen Ray Society
Subjects: Radiotherapy X-rays
Publisher: Springfield, Ill. C.C. Thomas
Contributing Library: Gerstein – University of Toronto
Digitizing Sponsor: University of Toronto

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thatportion of the map of Minnesota lying northand northwest of Minneapolis will showlakes without number. These lakes aboundin the fish that delight the angler—bass. pike, pickerel, and the mighty muskellunge.Llotel accommodations are excellent, anessential to the thorough and proper enjoy-ment of a vacation. Bathing, boating, golfand tennis furnish additional recreation, allcalculated to further the complete enjoymentof the wonderful Minnesota atmosphere. Weare indeed fortunate that our meetingaffords this splendid opportunity to visitsuch a fine vacation country. There are nu-merous Minnesota points authorized as des-tinations for summer tourist excursiontickets, and if you will write Mr. A. C.Irons, General Passenger Agent, ChicagoGreat Western R. R., Chicago, 111., advisinghim just what plans you are considering foryour trip, he will gladly give you such infor-mation as will best meet with your require-ments. Inquiry should be made early so thatdetails may be arranged in time.

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THE AMERICAN JOURNAL OF ROENTGENOLOGY Published by Paul B, Hoeber, New York City Issued Monthly. Subscription, .00 per year. Advertising rates submitted on application.Editorial office, 480 Park Av., New York. Office of publication, 6y-6p East 59th St., New York. Official Organ ofTHE AMERICAN ROENTGEN RAY SOCIETY PresidentJames T. Case, M.D., Battle Creek, Mich. First Vice-PresidentM. P. BuRNHAM, M.D., 900 Hyde St., San Francisco Second Vice-PresidentStanton Heck, M.D., 31 Lincoln Ave., Salem, Ohio SecretaryG. W. Ghier, M.D., Jenkins Arcade, Pittsburgh, Pa. TreasurerVm. a. Evans, M.D., 32 Adams Ave., VV., Detroit Executive CommitteeG. W. Holmes, M.D., Boston, Mass. Henry K. Pancoast, M.D., Philadelphia, Pa. Alexander B. Moore, M.D., Rochester, Minn. Publication CommitteeIsaac Gerber, M.D., Providence, R. L David R. Bowen, M.D., Philadelphia, Pa. Leopold Jaches, M.D., New York, N. Y. Librarian and HistorianH. W. Dachtler, 224 Michigan St., Toledo, Ohio EditorH. M. Imdoden, M.D., 480

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Image from page 163 of “QST” (1915)
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Identifier: qstamer00amer
Title: QST
Year: 1915 (1910s)
Authors: American Radio Relay League
Subjects: Radio Radio
Publisher: [Newington, Conn., etc., American Radio Relay League]
Contributing Library: Internet Archive
Digitizing Sponsor: Internet Archive

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ormly wound on thisform to provide an even progression of resistancechange vs. shaft rotation. A non-alkaline, non-hygroscopic enamel is applied carefully to thewinding, and then heated to a hard, glass-likefinish for maximum protection to the vulnerableparts of the winding. The smaller sizes, 25 through 150 watt, are equippedwith conventional threaded bushings for panelmounting; sizes above 150 watt are equipped withset screws. All sizes have panel locating lugs whichmay be adjusted for universal mounting. Suitableknob and dial plate are supplied with each. A brochure containing dimensional drawings ofthese controls, plus catalog listings, has been pre-pared. For your copy, write to us at Box 1558,Indianapolis 6, Indiana. Meanwhile, check withyour Mallory Distributor, and take a good look atthese power controls. Their construction alone willinspire confidence in their ability to operate prop-erly for a long, long time. P. R. MALLORY & CO. Inc. p. O. Box 1558INDIANAPOLIS 6 INDIANA

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MARCH 1955 VOLUME XXXIX . NUMBER 3 PUBLISHED, MONTHLY, AS ITS OFFICIAL ORGAN, BY THE AMERICAN RADIO RELAY LEAGUE, INC., ATWEST HARTFORD. CONN.. U. S. A.; OFFICIAL ORGAN OF THE INTERNATIONAL AMATEUR RADIO UNION STAFF Editorial A. L. BUDLONG, WIBUD Editor HAROLD M. McKEAN, WICEGManaging Editor GEORGE GRAMMER, WIDFTechnical Editor DONALD H. MIX, WITS BYRON GOODMAN, WIDX Assistant Technical Editors EDWARD P. TILTON, WIHDQ V.H.F. Editor C. VERNON CHAMBERS, WlffiQ LEWIS G. McCOY, WIICP Technical Assistants ROD NEWKIRK, W9BRD DX Editor ELEANOR WILSON, WIQON YL Editor ANN B. FURR, WIZIB Production Assistant WILLIAM A. PAUL, W3UDO Editorial Assistant Advertising LOHENTZ A. MORROW, WIVG Advertising Manager EDGAR D. COLLINS Advertising Assistant Circulation DAVID H. HOUGHTON Circulation Manager J. A. MOSKEY, WIIMY Assistant Circulation Manager OFFICES 38 La SaUe RoadWest Hartford 7, ConnecticutTel.: AD 3-6268 TWX: HF 88 Subscription rate In Inited States andPossessions, .00 per year, postpaid;

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