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Τι (ποιος) είναι attenuation$5791$ - ορισμός

GRADUAL LOSS OF FLUX INTENSITY THROUGH A MEDIUM

Attenuate; Natural attenuation; Attenuating; Attenuation (electromagnetic radiation); Attentuate; Ultrasound attenuation; Extinction (physics); Optical extinction; Ultrasonic attenuation; Seismic attenuation

Attenuation coefficient

MEASURE FOR THE EXPONENTIAL REDUCTION OF A QUANTITY ALONG A PATH DUE TO ABSORPTION AND SCATTERING

Absorption coefficient; Absorption Coefficient; Linear attenuation coefficient; Linear coefficient; Linear absorption coefficient; Narrow beam attenuation coefficient; Scattering coefficient

The linear attenuation coefficient, attenuation coefficient, or narrow-beam attenuation coefficient characterizes how easily a volume of material can be penetrated by a beam of light, sound, particles, or other energy or matter. A coefficient value that is large represents a beam becoming 'attenuated' as it passes through a given medium, while a small value represents that the medium had little effect on loss.

https://en.wikipedia.org/wiki/Attenuation_coefficient

attenuation

<communications> The progressive reduction in amplitude of a signal as it travels farther from the point of origin. For example, an electric signal's amplitude reduces with distance due to electrical impedance. Attenuation is usually measured in decibels [per metre?]. Attenuation does not imply appreciable modification of the shape of the waveform (distortion), though as the signal amplitude falls the signal-to-noise ratio will also fall unless the channel itself is noise free or the signal is amplified at some intermediate point(s) along the channel. ["Networking Essentials, second edition", Microsoft Corporation, pub. Microsoft Press 1997]. (2003-07-29)

Attenuate

·adj ·Alt. of Attenuated.

II. Attenuate ·vi To become thin, slender, or fine; to grow less; to Lessen.

III. Attenuate ·vt To lessen the amount, force, or value of; to make less complex; to Weaken.

IV. Attenuate ·vt To make thin or slender, as by mechanical or chemical action upon inanimate objects, or by the effects of starvation, disease, ·etc., upon living bodies.

V. Attenuate ·vt To make thin or less consistent; to render less viscid or dense; to rarefy. Specifically: To subtilize, as the humors of the body, or to break them into finer parts.

Βικιπαίδεια

Attenuation

In physics, attenuation (in some contexts, extinction) is the gradual loss of flux intensity through a medium. For instance, dark glasses attenuate sunlight, lead attenuates X-rays, and water and air attenuate both light and sound at variable attenuation rates.

Hearing protectors help reduce acoustic flux from flowing into the ears. This phenomenon is called acoustic attenuation and is measured in decibels (dBs).

In electrical engineering and telecommunications, attenuation affects the propagation of waves and signals in electrical circuits, in optical fibers, and in air. Electrical attenuators and optical attenuators are commonly manufactured components in this field.

https://en.wikipedia.org/wiki/Attenuation