An alternator is an electrical generator that converts mechanical energy into electrical energy.

Bell Labs (formerly known as Bell Telephone Laboratories) is a research and development organization that focuses on technological innovation in telecommunications.

Chemistry is a branch of science that studies matter and the changes it undergoes.

Electrical engineering is a field of engineering that deals with the study, design, and application of electricity, electronics, and electromagnetism.

An electric generator, also known as a dynamo, is a device that converts mechanical energy into electrical energy.

An electric motor is a device that converts electrical energy into mechanical energy.

Electronics is the science and technology of studying, designing, and manufacturing devices that use the flow of electrons to perform electrical functions.

Electronic engineering, also known as electronics and communication engineering, is a discipline within electrical engineering that involves the design, development, testing, and maintenance of electronic circuits, systems, and devices.