Elementary and dental radiography (1813) (14570658019)

Identifier: elementarydenta00rape (find matches)

Title: Elementary and dental radiography

Year: 1813 (1810s)

Authors: Raper, Howard Riley

Subjects:

Publisher: New York : Consolidated Dental Mfg. Co.

Contributing Library: Dentistry - University of Toronto

Digitizing Sponsor: University of Toronto

Text Appearing Before Image:

Fig. 312. A, B, C, and D, same as in Fig. 311. E, a piece of lead glass 1-4 inch thick. From the standpoint of protection for the oper- Cbe Ecad Screen ator nothing is so efficient as the lead screen or cabi- and Cabinet, net (Figs. 314, 315, 316 and 317). The use of either makes it possible for the operator to protect himself completely from all direct X-rays. The lead used in protective screens and cabinets is usually one-six- THE DANGERS OE THE X-RAY 281

Text Appearing After Image:

Fig. 313. A, B, C. and D, same as in Fig. 311. E, the dotted lines outline the position of a piece of i)ine wood 1-2 inch thick. teenth inch thick. Lead of this thickness does not totally obstruct verypenetrating X-rays when the tube is brought close up to it. but at theusual distance of several feet between tube and screen it is doubtful ifany X-rays penetrate the latter. The lead glass used in the windows in protection screens and cabinetsis usually one-fourth inch thck. \\\\h the tube placed in close proximity 282 DENTAL RADIOGRAPHY

элементарная и стоматологическая рентгенография 1913 г. книжные иллюстрации Рентгеновский лекарство рентгенография рентгеновские лучи стоматология высокое разрешение изображения из интернет-архива Канада

1813

University of Toronto

http://commons.wikimedia.org/

public domain