File:Elementary and dental radiography (1913) (14757121975).jpg

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Identifier: elementarydental00rape (find matches)
Title: Elementary and dental radiography
Year: 1913 (1910s)
Authors: Raper, Howard Riley, 1886-1978
Subjects: Radiography, Dental
Publisher: New York, Consolidated dental mfg. co. (etc., etc.)
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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: About 19 inches. 5. Thickness of part: That of the cranium coverings and con-tents, about 8 inches. (Fig. 104.) 6. Density of parts: That of the cranium, coverings and contents. 7. Plate used: Cramer X-ray plate, 8x10 inches, with intensifyingscreen. 8. Time of exposure: Three (3) seconds. 9. Time in developer, and developer used: Seven (7) minutesin water, 32 oz.; soda sulphite, 12 dr.; hydrochinone, 2 dr.; edinol, 75gr.; potassium bromide, 90 gr.; potassium carbonate, 2 oz. Comment: Had an intensifying screen not been used, the time ofexposure would have been about ten (10) seconds. To make the negative of the radiograph shownTig. 112. in Fig. 112 the conditions were as follows: I. Machine used: Scheidel-Western, portablehigh-frequency, 6-inch coil, operating on (04-volt A. C. circuit. ( ( wishto acknowledge my indebtedness and express my sincere thanks to theScheidel-Western X-ray Coil Mfg. Co., who furnished me with theircoil for experimental work.) MAKING DENTAL RADIOGRAPHS I25
Text Appearing After Image:
Fig. 113. Arrow A points to an impacted lower third molar. Arrow B points to the temporo-mandibular articulation, which shows very clearly in this picture. IJt. DENTAL RADIOGRAPHY 2. Strength of current: No meters. A rough guess, 12 amperes inprimary. Milliamperage sent through tube, about 8. Fat, fuzzy spark6 inches long obtainable. 3. Make and condition of tube: Green and Bauer, 6-inch, high-fre-quency tube. Tube-regulating spark gap, 5 inches. (In my limited ex-perience I have found that the tube-regulating spark gap must be longerfor higl-frequency tubes to obtain the same condition of vacuum.) Tubebacks up 6 inches of parallel spark.

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https://www.flickr.com/photos/internetarchivebookimages/14757121975/

Author Raper, Howard Riley, 1886-1978
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(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Flickr tags
InfoField
  • bookid:elementarydental00rape
  • bookyear:1913
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Raper__Howard_Riley__1886_1978
  • booksubject:Radiography__Dental
  • bookpublisher:New_York__Consolidated_dental_mfg__co_
  • bookpublisher:__etc___etc__
  • bookcontributor:Columbia_University_Libraries
  • booksponsor:Open_Knowledge_Commons
  • bookleafnumber:136
  • bookcollection:medicalheritagelibrary
  • bookcollection:ColumbiaUniversityLibraries
  • bookcollection:americana
Flickr posted date
InfoField
27 July 2014



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