Which of the following best describes the application of pneumatic systems?

Pneumatic systems are characterized by their use of compressed gases, typically air, to transmit power and perform work. This means that these systems operate by utilizing the energy stored in compressed gases to create movement or generate force, which is essential in various applications like automation, material handling, and even in tools such as pneumatic drills and hammers.

The reliance on gases rather than liquids is a fundamental aspect of pneumatic systems, differentiating them from hydraulic systems, which depend on the incompressibility of liquids. In contrast to applications focused on thermal control or the analysis of solid materials, pneumatic systems are designed specifically to harness the properties of gases to achieve mechanical tasks effectively. This distinction underlines the importance of compressed gases as the primary medium for power within pneumatic systems, making this answer the most accurate description of their application.