While determination of elastic and mechanical properties has always been important to some industrial laboratories, the significance of these measurements has increased tremendously in recent years for both academic and industrial scientists and engineers. This is as a result of new advance materials research and automated manufacturing and processing methods. Physical Methods of Chemistry has been written by researchers who have broad practical laboratory experience in the application of their respective techniques. The chapters provide, either directly or through clearly designated references, information that is essential to the use of these techniques in the laboratory.