edited by JOHN W. MOORE
Bits and Pieces, 23 Most authors of Bits and Pieces will make available listines and/or machine-readable versions of their programs. please read each description carefully to determine compatibility with your own computing environment before requesting materials from any of the authors. Revised Guidelines for Authors of Bits and Pieces appeared in the December 1982 and December 1983 issues of THIS JOURNAL. Several programs described in this article and marked as such are available from Project SERAPHIM. If you do not already have a SERAPHIM Catalog, request one from: Dr. John W. Moore, Director, Project SERAPHIM, Department of Chemistry, Eastern Michigan University, Ypsilanti, MI 48197.
A sfifinor? Fair nisplay of Chromatoaraphy ,al h ~ k s ~.m&an Ynd 0. J. Parker m e r n WgLlington University Cheney. WA 99004
Figure 1 . Chromatography of inks static display board.
We describe here a Chromatography display designed for our "Science a t Eastern" program. This program is designed to bring large numbers of junior high and high school students through an exhibit area over a period of several days. Due to 'the large number of displays most must he unmanned other than for general theft security. Each display must make a j a p i d impact and allow for much movement of traffic. Ours consisted of two parts. One was a static display of color photographs with a minimum text and a simulated experiment in progress describing the fundamentals involved. The other was an interactive display using a computer where passers-by could interact with the computer to solve a mystery by doing a simulated chromatography experiment.
vellow). the fluorescent illumination in the d i s ~ l a varea had to he s"ppltmented with incandescent lightini. 'l'he photw araflhs wvre 11 X 14 Cihachrome enlarcements made from ~ o d a c h r o m 64 e slides which were takenusing an electronic flash. This gave a very faithful rendition of the actual colors. The simulated separation was an actual separation of the hlack ink. After drying, the chromatography paper was sealed up to the solvent front using Deft Clear Wood Finish which simulated the solvent on the paper. The solvent in the cylinder was simulated with mineral oil. The 300-mL cylinder was permanently mounted to the display hoard with the initial point of application, the solvent front, and the separated dyes labeled.
Static Display The chromatography display (Fig. 1) was presented on a 5 X 8-tt hoard of cork with nlvwood t~nrkine.The disolav was designed to stand alone 4 t h the section &at held
