In general, mechanical engineers are involved with the design, research, development, manufacture, distribution, support, maintenance, and recycling of devices and products. Automobiles, airplanes, home appliances (refrigerators, washing machines, dryers, vacuum cleaners, etc.), robots, printers, and computer hard disk drives are some of the various products that have been customarily designed and developed by mechanical engineers. Mechanical engineers possess a firm understanding of science, mathematics and engineering needed to carry out these complex tasks which are so important to a modern technological society. The graduate curriculum is designed to provide a specialized education for career advancement or further work towards a doctoral degree program.