1 This wide-field view of the sky around the bright star Alpha Centauri was created from photographic images forming part of the Digitized Sky Survey 2. The star appears so big just because of the scattering of light by the telescope's optics as well as in the photographic emulsion.
Electronics is the science of controlling electrical energy electrically, in which the electrons have a fundamental role. Electronics deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes, integrated circuits, associated passive electrical components, and interconnection technologies.
Electronics is the study and use of electrical parts and circuits. These electronic components control electricity for useful purposes. Electronic devices have many electronic components such as - resistors, capacitors, coils of wire called inductors, integrated circuits, connection wires and circuit boards. Older devices used glass or metal vacuum tubes to control the flow of electricity.