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Что (кто) такое visible spectrum - определение

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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Примеры употребления для visible spectrum

1. Brightness in the visible spectrum is a function of both the reflectivity of the body and its size, expressed as the area illuminated by the sun.

2. Her hair, which has been "every color on the visible spectrum," is at the moment its natural reddish–brown, and her slate–blue eyes are rimmed in black.

3. Enter materials engineer Michael Cortie and his colleagues at the Institute for Nanoscale Technology in Sydney, Australia, who are working to perfect a coating that can respond to the visible spectrum ––that is, the lightbulb hanging from your bathroom ceiling.

4. To make a thin, flexible metamaterial cloak, Schurig said, "is technically challenging but not fundamentally impossible." And although no cloak can yet make objects fully invisible to the human eye, he added, it may not be long before scientists can bend the visible spectrum enough to make an object hard to see.

5. In that experiment, a shielded object a little smaller than a hockey puck was made invisible to a detector that uses microwaves to "see." The first working cloaks will be limited that way, he said –– able to steer just a limited part of the light spectrum around objects –– and it could be years before scientists make cloaks that work for all wavelengths, including the visible spectrum used by the human eye.