General science

General science

A variety of science subjects concerning the fundamental knowledge about different aspects of our world and their underlying principles.

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General science

A device for coherent amplification or generation of electromagnetic waves by use of excitation energy in resonant atomic or molecular systems. “Maser” is an acronym for microwave amplification by ...

digital-to-analog converter

Science; General science

A device for converting information in the form of combinations of discrete (usually binary) states or a signal to information in the form of the value or magnitude of some characteristics of a ...

analog-to-digital converter

Science; General science

A device for converting the information contained in the value or magnitude of some characteristics of an input signal, compared to a standard or reference, to information in the form of discrete ...

bolometer

Science; General science

A device for detecting and measuring small amounts of thermal radiation. The bolometer is a simple electric circuit, the essential element of which is a slab of material with an electrical property, ...

photoconductive cell

Science; General science

A device for detecting electromagnetic radiation (photons) by variation of the electrical conductivity of a substance (a photoconductor) upon absorption of the radiation by this substance. During ...

camera

Science; General science

A device for forming and recording images; the basic tool of photography. In its simplest form, a camera is a lighttight box in which an image is formed through a pinhole or lens at one end onto a ...

electron microscope

Science; General science

A device for forming greatly magnified images of objects by means of electrons. Electron microscopes serve primarily two purposes: the visual examination of structures too fine to be resolved with ...