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Что (кто) такое visible spectrum - определение

Найдено результатов: 549

Visible spectrum

PORTION OF THE ELECTROMAGNETIC SPECTRUM THAT IS VISIBLE TO THE HUMAN EYE

Visual spectrum; Visible region; Prismatic Colours; Refraction of Prisms and the Spectrum of Light; Color spectrum; Visible radiation; Optical spectrum; Colour spectrum; Visible light spectrum; Visual radiation; Visible wavelength; Visible Spectrum; Visible Light Spectrum; Visible frequencies; Visible-light; Visible frequency; Visible colour spectrum; Visual light; Optical light; Optical spectra; Visual band; The visible spectrum

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light.

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

Spectrum (functional analysis)

TERM USED IN FUNCTIONAL ANALYSIS

Approximate eigenvalue; Operator spectrum; Spectrum of an operator; Compression spectrum; Spectral representation; Point spectrum; Continuous spectrum (functional analysis)

In mathematics, particularly in functional analysis, the spectrum of a bounded linear operator (or, more generally, an unbounded linear operator) is a generalisation of the set of eigenvalues of a matrix. Specifically, a complex number λ is said to be in the spectrum of a bounded linear operator T if T-\lambda I is not invertible, where I is the identity operator.

https://en.wikipedia.org/wiki/Spectrum_(functional_analysis)

spectrum

CONTINUOUS RANGE OF VALUES, SUCH AS WAVELENGTHS IN PHYSICS

Energy spectrum; Spectracular; Energy spectra; Spectroscopic observations; Spectral density (physical science); Spectrum of disease; Spectrum (physics)

(spectra, or spectrums)

1.

The spectrum is the range of different colours which is produced when light passes through a glass prism or through a drop of water. A rainbow shows the colours in the spectrum.

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2.

A spectrum is a range of a particular type of thing.

Politicians across the political spectrum have denounced the act...

The term 'special needs' covers a wide spectrum of problems.

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3.

A spectrum is a range of light waves or radio waves within particular frequencies.

Vast amounts of energy, from X-rays right through the spectrum down to radio waves, are escaping into space...

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spectrum

CONTINUOUS RANGE OF VALUES, SUCH AS WAVELENGTHS IN PHYSICS

Energy spectrum; Spectracular; Energy spectra; Spectroscopic observations; Spectral density (physical science); Spectrum of disease; Spectrum (physics)

n.

Image, appearance, representation.

Spectrum

CONTINUOUS RANGE OF VALUES, SUCH AS WAVELENGTHS IN PHYSICS

Energy spectrum; Spectracular; Energy spectra; Spectroscopic observations; Spectral density (physical science); Spectrum of disease; Spectrum (physics)

·noun An apparition; a specter.

II. Spectrum ·noun The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. ·see ·Illust. of Light, and Spectroscope.

III. Spectrum ·noun A luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum.

spectrum

CONTINUOUS RANGE OF VALUES, SUCH AS WAVELENGTHS IN PHYSICS

Energy spectrum; Spectracular; Energy spectra; Spectroscopic observations; Spectral density (physical science); Spectrum of disease; Spectrum (physics)

n. a broad, wide spectrum

Spectrum

CONTINUOUS RANGE OF VALUES, SUCH AS WAVELENGTHS IN PHYSICS

Energy spectrum; Spectracular; Energy spectra; Spectroscopic observations; Spectral density (physical science); Spectrum of disease; Spectrum (physics)

ZX Spectrum

spectrum

CONTINUOUS RANGE OF VALUES, SUCH AS WAVELENGTHS IN PHYSICS

Energy spectrum; Spectracular; Energy spectra; Spectroscopic observations; Spectral density (physical science); Spectrum of disease; Spectrum (physics)

¦ noun (plural spectra -tr?)

1. a band of colours produced by separation of the components of light by their different degrees of refraction according to wavelength, e.g. in a rainbow.

the entire range of wavelengths of electromagnetic radiation.

a characteristic series of frequencies of electromagnetic radiation emitted or absorbed by a substance.

the components of a sound or other phenomenon arranged according to frequency, energy, etc.

2. a scale extending between two points; a range: the political spectrum.

Origin

C17 (in the sense 'spectre'): from L., lit. 'image, apparition', from specere 'to look'.

Spread spectrum

SPREADING THE FREQUENCY DOMAIN OF A SIGNAL

Spread-spectrum; Digital Spread Spectrum; Spread Spectrum; Spread spectrum communication; Spread-spectrum clocking; Spread spectrum clock; Spread Spectrum Clock; Spread Spectrum Clocking; Spread spectrum clocking

In telecommunication and radio communication, spread-spectrum techniques are methods by which a signal (e.g.

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

ZX Spectrum

SERIES OF PERSONAL HOME COMPUTERS

Sinclair Spectrum; Sinclair ZX spectrum; Zx spectrum; Spectrum (computer); Spectrum Plus 2; Sinclair ZX Spectrum 48K; Zx spectrum +3; Zx spectrum +2; ZX-82; ZX82; ZX Spectrum +2; ZX Spectrum +3; World of spectrum; Spectrum +3; +3DOS; +3 DOS; Sinclair ZX Spectrum; ZX Spectra; ZX spectrum; Spectrum 48k; ZX Spectrum 128; ZX Spectrum+; ZX-Spectrum; Spectrum Vega; World of Spectrum; Spectrum ZX; Amstrad ZX Spectrum +3; Spectrum +2; ZX Spectrum +2A; Zx spectrum +2a; Spectrum +2a; ZX Spectrum +2B; Zx spectrum +2b; Spectrum +2b

<computer> Sinclair's first personal computer with a colour display. The Spectrum used the Zilog Z80 processor like its predecessors the ZX-80 and ZX-81. It was originally available in 16k and 48k versions using cassette tape and later grew to 128k and sprouted floppy disks. It had a wider and more solid case and a marginally better "dead flesh" keyboard. Unlike the earlier models, it didn't require the presence of a cold carton of milk to prevent it overheating. It was possibly the most popular home computer in the UK for many years. The TK-90X was a clone. (1995-11-04)