Mechanical engineering involves the conversion and control of energy and motion in machinery and systems. Mechanical engineers design, analyse and improve products as diverse as refrigerators, washing machines, solar water heaters, pumps, engines, compressors, wind turbines and air-conditioning systems. They apply knowledge of materials, structures, energy and management to the solution of technical problems. Management involves the planning, organising, coordination and direction of the resources of organisations. Managers draw on technical skills as diverse as accounting and organisational behaviour, and build on personal abilities including analysis and leadership.