Electric materials

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Types of fire extinguishers and their correct use. Useful for electrician: electrical engineering and electronics

The first thing they look for and use when discovering a fire source is, of course, a fire extinguisher. Thanks to a fire extinguisher it becomes...

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Sources of optical radiation. Useful for Electrical Engineering: Electrical and Electronics Engineering

Sources of optical radiation (in other words, sources of light) are many natural objects, as well as artificially created devices, in...

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How a digital signal is transmitted over a distance. Useful for electrician: electrical engineering and electronics

If an analog signal is continuous, then a digital signal is a signal that is a sequence of discrete (clearly separated in magnitude and...

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Superconductivity of metals, the discovery of Heike Kamerling-Onnes. Useful for electrician: electrical engineering and electronics

Heike Kamerling-Ones, a Dutch physicist and chemist, was the first to encounter the phenomenon of superconductivity. The year of discovery of the phenomenon is...

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Infrared radiation and its applications. Useful for Electrical Engineering: Electrical and Electronics Engineering

Electromagnetic radiation with a wavelength of 0.74 microns to 2 mm is called in physics infrared radiation or infrared...