CompressionHeat Demonstration Instrument Purpose This instrument demonstrates the physical principle that rapid compression of gas in a closed container increases temperature and converts mechanical energy into heat energy. Key benefits Directly shows adiabatic compression and energy conversion for clear classroom and lab demonstrations. Simple manual operation produces a visible result when the absorbent cotton ignites, making the effect easy to observe. Componentbased assembly and repeatable operation support student experiments and instructorled demonstrations. Main components and function Cylinder body, piston, upper cover, connecting rod, and handle. Piston is coated with lubricating oil to ensure smooth movement and reduce friction losses. Absorbent cotton placed at the cylinder bottom serves as a visible indicator of the temperature rise when it ignites during rapid compression. Assembly and operation steps 1. Unscrew the handle and upper cover of the cylinder. 2. Insert the connecting rod into the upper cover and screw the handle back on. 3. Place a small piece of clean absorbent cotton in the bottom of the cylinder. 4. Push the lubricated piston into the cylinder and tighten the upper cover. 5. Stand the cylinder upright on a stable surface. 6. Press the piston handle sharply and quickly toward the bottom of the cylinder. Rapid compression increases the gas temperature and the absorbent cotton will ignite, demonstrating conversion of mechanical energy to heat. Performance notes Rapid, forceful piston movement is required to produce a clear temperature rise and ignition of the cotton. The lubricated piston reduces friction and helps improve energy conversion efficiency during compression. Repeatable operation allows multiple demonstrations under similar conditions. Typical use scenarios Physics classroom demonstration to illustrate thermodynamic principles such as adiabatic compression and energy conversion. Laboratory exercises for students studying gas laws, thermodynamics, or mechanical to thermal energy conversion. Public science demonstrations or outreach events where a compact, visible experiment is needed to show basic physical principles. This instrument is intended for educational and demonstrational use in controlled settings. Follow institutional lab procedures when performing demonstrations.