Instructional Videotape Introduction to the Precession Camera A 21-min videotape has been produced to introduce new users of a precession camera to the use of the Enraf-Nonius PrecessionCamera and Philips X-Ray Generator.' At Bucknell University,this tape is shown to junior students of Physical Chemistry2and research students prior to their "hands-on" use of the camera. A 7-min version of the same tape is used in the General Chemistry course to provide a brief overview of the process prior to a laboratory exercise on crystals. A VHS tape with the two programs is availahle.3 Funds for the camera and generator were provided by the National Science Foundations College Science Instrument Program Grant CIS-8650293. 2Cooper,J. N.; Smith, D. A,; Kastner, M. E. J. Chem. Edue. 1989.66.961-968. For ordering information write to the author. M. E. Kadner Bucknell University Lewisburg, PA 17837
Volume 66
Number 11 November 1989
969
