Mechanical engineering is concerned with creative and imaginative use of engineering principles and science to shape the world around us, through the development of new materials, technologies, processes and products. Mechanical engineers design and develop everything that moves or has moving parts, ranging from spacecrafts and aeroplanes to racing cars, from household goods like refrigerators to the small motors that turn a CD in a CD player, from robotic control of machinery to nanotechnologies, from mechanical hearts and artificial limbs to fitness machines, and from oil and gas exploration and production technologies to wind turbines.Our society relies on Electrical Engineers for everything from low power electrical machines, control systems, to high voltage electrical power generation and distribution systems. Electrical Engineering is at the core of the modern world, from computers, to digital circuits, photonics and a wealth of electronic devices.