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Mechanical engineering is an engineering branch that combines engineering physics and mathematics principles with materials science, to design, analyze, manufacture, and maintain mechanical systems. It is one of the oldest and broadest of the engineering branches.
The mechanical engineering field requires an understanding of core areas including mechanics, dynamics, thermodynamics, materials science, structural analysis, and electricity. In addition to these core principles, mechanical engineers use tools such as computer-aided design (CAD), computer-aided manufacturing (CAM), and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices, weapons, and others. It is the branch of engineering that involves the design, production, and operation of machinery.
Mechanical engineering emerged as a field during the Industrial Revolution in Europe in the 18th century; however, its development can be traced back several thousand years around the world. In the 19th century, developments in physics led to the development of mechanical engineering science. The field has continually evolved to incorporate advancements; today mechanical engineers are pursuing developments in such areas as composites, mechatronics, and nanotechnology. It also overlaps with aerospace engineering, metallurgical engineering, civil engineering, structural engineering, electrical engineering, manufacturing engineering, chemical engineering, industrial engineering, and other engineering disciplines to varying amounts. Mechanical engineers may also work in the field of biomedical engineering, specifically with biomechanics, transport phenomena, biomechatronics, bionanotechnology, and modelling of biological systems.
Electrical engineeringis anengineeringdiscipline concerned with the study, design, and application of equipment, devices, and systems which useelectricity,electronics, andelectromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century aftercommercializationof theelectric telegraph, the telephone, andelectrical powergeneration, distribution, and use.
Electrical engineering is now divided into a wide range of different fields, includingcomputer engineering,systems engineering,power engineering, telecommunications,radio-frequency engineering,signal processing,instrumentation,photovoltaic cells,electronics, andopticsandphotonics. Many of these disciplines overlap with other engineering branches, spanning a huge number of specializations including hardware engineering,power electronics, electromagnetics and waves,microwave engineering,nanotechnology,electrochemistry, renewable energies, mechatronics/control, and electrical materials science.[a]
Electrical engineers typically hold adegreein electrical engineering or electronic engineering. Practising engineers may haveprofessional certificationand be members of aprofessional bodyor an international standards organization. These include theInternational Electrotechnical Commission(IEC), theInstitute of Electrical and Electronics Engineers(IEEE) and theInstitution of Engineering and Technology(IET)(formerly the IEE).
Electrical engineers work in a very wide range of industries and the skills required are likewise variable. These range fromcircuit theoryto the management skills of aproject manager. The tools and equipment that an individual engineer may need are similarly variable, ranging from a simplevoltmeterto sophisticated design and manufacturing software.
Derbyshire (/ˈdɑːrbɪˌʃɪər, -ʃər/) is a county in the East Midlands of England. A substantial portion of the Peak District National Park lies within Derbyshire, containing the southern extremity of the Pennine range of hills which extend into the north of the county. The county contains part of the National Forest, and borders on Greater Manchester to the northwest, West Yorkshire to the north, South Yorkshire to the northeast, Nottinghamshire to the east, Leicestershire to the southeast, Staffordshire to the west and southwest and Cheshire also to the west. Kinder Scout, at 636 metres (2,087 ft), is the highest point in the county, whilst Trent Meadows, where the River Trent leaves Derbyshire, is its lowest point at 27 metres (89 ft).:1 The River Derwent is the county's longest river at 66 miles (106 km), and runs roughly north to south through the county. In 2003 the Ordnance Survey placed Church Flatts Farm at Coton in the Elms (near Swadlincote) as the farthest point from the sea in Great Britain.
The city of Derby is a unitary authority area, but remains part of the ceremonial county of Derbyshire. The non-metropolitan county contains 30 towns with between 10,000 and 100,000 inhabitants. There is a large amount of sparsely populated agricultural upland: 75% of the population live in 25% of the area.