Electronics

Electronics is the science of how to control electric energy, energy in which the electrons have a fundamental role. Electronics deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive electrical components and interconnection technologies. Commonly, electronic devices contain circuitry consisting primarily or exclusively of active semiconductors supplemented with passive elements; such a circuit is described as an electronic circuit.

The nonlinear behaviour of active components and their ability to control electron flows makes amplification of weak signals possible, and electronics is widely used in information processing, telecommunication, and signal processing. The ability of electronic devices to act as switches makes digital information processing possible. Interconnection technologies such as circuit boards, electronics packaging technology, and other varied forms of communication infrastructure complete circuit functionality and transform the mixed components into a regular working system.

Electronic musical instrument

An electronic musical instrument is a musical instrument that produces sound using electronics. Such an instrument sounds by outputting an electrical audio signal that ultimately drives a loudspeaker.

An electronic instrument might include a user interface for controlling its sound, often by adjusting the pitch, frequency, or duration of each note. However, it is increasingly common to separate user interface and sound-generating functions into a music controller (input device) and a music synthesizer, respectively, with the two devices communicating through a musical performance description language such as MIDI or Open Sound Control.

All electronic musical instruments can be viewed as a subset of audio signal processing applications. Simple electronic musical instruments are sometimes called sound effects; the border between sound effects and actual musical instruments is often hazy.

Electronic musical instruments are now widely used in most styles of music. Development of new electronic musical instruments, controllers, and synthesizers continues to be a highly active and interdisciplinary field of research. Specialized conferences, notably the International Conference on New Interfaces for Musical Expression, have organized to report cutting-edge work, as well as to provide a showcase for artists who perform or create music with new electronic music instruments, controllers, and synthesizers.

Electronics (magazine)

Electronics was an American trade journal that covered the radio industry and its later spin-offs in the mid-to-late 20th century. Its first issue was dated in April 1930. The periodical was published under the title Electronics until 1984, when it changed temporarily to the new title ElectronicsWeek, but then reverted again to the original title Electronics in 1985. The ISSN for the corresponding periods are: 0013-5070 for the 1930–1984 issues, 0748-3252 for the 1984–1985 issues with title ElectronicsWeek, and 0883-4989 for the 1985–1995 issues. It was published by McGraw-Hill until 1988, when it was sold to the Dutch company VNU. VNU sold its American electronics magazines to Penton Publishing the next year.

Generally a monthly magazine, its frequency and page count varied with the state of the industry, until its end in 1995. More than its principal rival Electronic News, it balanced its appeal to managerial and technical interests (at the time of its 1992 makeover, it described itself as a magazine for managers). The magazine was best known for publishing the April 19, 1965 article by Intel co-founder Gordon Moore, in which he outlined what came to be known as Moore's Law.

Waste

Waste and wastes are unwanted or unusable materials. Waste is any substance which is discarded after primary use, or it is worthless, defective and of no use.

The term is often subjective (because waste to one person is not necessarily waste to another) and sometimes objectively inaccurate (for example, to send scrap metals to a landfill is to inaccurately classify them as waste, because they are recyclable). Examples include municipal solid waste (household trash/refuse), hazardous waste, wastewater (such as sewage, which contains bodily wastes (feces and urine) and surface runoff), radioactive waste, and others.

Definitions

United Nations Environment Program

According to the Basel Convention,

United Nations Statistics Division, Glossary of Environment Statistics

European Union

Under the Waste Framework Directive, the European Union defines waste as "an object the holder discards, intends to discard or is required to discard."

Types

There are many waste types defined by modern systems of waste management, notably including:

Waste (play)

Waste is a play by the English author Harley Granville Barker. It exists in two wholly different versions, from 1906 and 1927. The first version was refused a license by the Lord Chamberlain and had to be performed privately by the Stage Society in 1907; the second was finally staged in public at the Westminster Theatre in 1936.

Plot

The plot centres around ambitious independent politician Henry Trebell, his plans for a bill to disestablish the Church of England and his fall from grace and suicide after his affair with married woman Amy O'Connell, who dies after a botched abortion. The title may refer to the waste of his potential talents due to the scandal, the loss of the disestablishment bill and the termination of Amy's pregnancy.

Dramatis personae (1927 version)

Waste (disambiguation)

Waste is unwanted or undesired material.

Waste, WASTE or W.A.S.T.E. may also refer to: