Each significant equation or formula should be displayed on a separate line. Consecutive equation numbers should be placed in parentheses at the right margin. Reports of experiments should include an estimate of uncertainty and an error analysis. The graphs of experimental results should also show error bars in a clear manner. Units and Abbreviations.
Dual units are preferred.
The units in which the work was done should be shown first and the alternate units should follow in parentheses. Acronyms and abbreviations should be defined the first time they are used in text. Manuscripts will be returned only upon request. A copy of the manuscript on a 3.5 inch PC-compatible disk. Word for the PC is preferred.