Absorption fading

1. Repeated increases and decreases of radio communications signal amplitude at the reception point. Fading of a radio wave results from multiple propagation paths from ...

fading

Telecommunications; General telecom

In a received signal, the variation (with time) of the amplitude or relative phase, or both, of one or more of the frequency components of the signal. Note: Fading is caused by ...

fading

Construction; Flooring

The loss of color due to exposure to light, heat or other destructive agents.

fading

Psychology; Behavior analysis

1) A procedure for transferring control of responding from one stimulus or set of stimuli to another by gradually removing one while the other is gradually introduced. Stimuli may ...

Alexanderson

Engineering; Electronic engineering

American inventor who developed the first practical television system in 1930. He later improved upon his invention when he developed color television in 1955.

decibel (dB)

Engineering; Electronic engineering

A practical unit of relative gain. In terms of power, the relative gain in decibels is equal to: Gain (dB) = 10 log 10 ( P out /P in ), where P out is the output power and P ...

audio-frequency meter

Engineering; Electronic engineering

An instrument to measure frequencies in the audio-frequency spectrum (approximately 20 Hz to 20 kHz). Three types are commonly used: * Analog - Gives direct indications of ...

Boltzmann's principle

Engineering; Electronic engineering

A description of the statistical distribution of large numbers of tiny particles under the influence of a force, such as an electric or magnetic field. When the system is in ...

current-hogging injection logic (CHIL)

Engineering; Electronic engineering

A form of bipolar digital logic, similar to current hogging logic but having the greater density characteristic of injection logic.

current-limiting resistor

Engineering; Electronic engineering

A series resistor inserted into a circuit to limit the current to a prescribed value.

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Industry/Domain: Biology Category: Human genome

Eugenics

Eugenics is a bio-social movement which advocates the practise that very talented people should spread their genes by having more children, and less ...