Mechanical Engineering

Still  air  is just about the best  insulator  there is. At the molecular level, heat transfer is easier when atoms are packed closely together. So the actual point of most insulations is to get rid of as much solid material and trap still  air  inside little pockets. 

Many industries employ mechanical engineers; a few industries and the type of systems MEs design are listed below.  Automotive    • Combustion    • Engines, transmissions    • Suspensions  Aerospace (w/ aerospace engineers)    • Control systems    • Heat transfer in turbines    • Fluid mechanics (internal & external)  Biomedical (w/ physicians)   • Bio-mechanics – prosthesis   • Flow and transport in vivo  Computers (w/ computer engineers)   • Heat transfer   • Packaging of components & systems  Construction (w/ civil engineers)   • Heating, ventilation, air conditioning (HVAC)   • Stress analysis  Electrical power generation (w/ electrical engineers)   • Steam power cycles - heat and work   • Mechanical design of turbines, generators Petrochemicals (w/ chemical, petroleum engineers)   • Oil drilling - stress, fluid flow, structures   • Design of refineries - piping, pressure vessels  Robotics (w/ electrical engineers)   • Mechanical design of actu