Definitions for spectrum
Here are all the possible meanings and translations of the word spectrum.
an ordered array of the components of an emission or wave
a broad range of related objects or values or qualities or ideas or activities
A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.
Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc.
The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).
The set of eigenvalues of a matrix.
Of a bounded linear operator A, the set of scalar values u03BB such that the operator Au03BBI, where I denotes the identity operator, does not have a bounded inverse; intended as a generalisation of the linear algebra sense.
Etymology: From spectrum, from specio. (see scope)
Samuel Johnson's Dictionary
An image; a visible form.
This prism had some veins running along within the glass, from the one end to the other, which scattered some of the sun’s light irregularly, but had no sensible effect in encreasing the length of the coloured spectrum. Isaac Newton, Opticks.
an apparition; a specter
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
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
Etymology: [L. See Specter.]
A spectrum is a condition that is not limited to a specific set of values but can vary infinitely within a continuum. The word saw its first scientific use within the field of optics to describe the rainbow of colors in visible light when separated using a prism; it has since been applied by analogy to many fields other than optics. Thus, one might talk about the spectrum of political opinion, or the spectrum of activity of a drug, or the autism spectrum. In these uses, values within a spectrum may not be associated with precisely quantifiable numbers or definitions. Such uses imply a broad range of conditions or behaviors grouped together and studied under a single title for ease of discussion. In most modern usages of spectrum there is a unifying theme between extremes at either end. Some older usages of the word did not have a unifying theme, but they led to modern ones through a sequence of events set out below. Modern usages in mathematics did evolve from a unifying theme, but this may be difficult to recognize.
Chambers 20th Century Dictionary
spek′trum, n. the image of something seen continued after the eyes are closed: the colours of light separated by a prism, and exhibited as spread out on a screen:—pl. Spec′tra.—n. Spec′trograph, an apparatus for photographing a spectrum.—adjs. Spectrograph′ic, -al.—n. Spectrog′raphy, the art of using the spectrograph.—adj. Spectrolog′ical.—adv. Spectrolog′ically.—ns. Spectrol′ogy, the division of physical science that embraces spectrum analysis: demonology; Spectrom′eter, an instrument like a spectroscope, by means of which the angular deviation of a ray of light in passing through a prism can be accurately measured.—adj. Spectromet′ric.—n. Spec′trophōne, an adaptation of the spectroscope, in which, on the principle of the radiophone, perception of a succession of sounds takes the place of observation by the eye.—adj. Spectrophon′ic.—ns. Spec′tro-polar′iscope, a polariscope combined with a spectroscope; Spec′troscope, an instrument for forming and examining spectra of luminous bodies, so as to determine their composition.—adjs. Spectroscōp′ic, -al.—adv. Spectroscōp′ically.—ns. Spec′troscōpist, one skilled in spectroscopy; Spec′troscōpy, the use of the spectroscope and the study of spectrum analysis. [L.,—specĕre, to see.]
The Nuttall Encyclopedia
the name given to coloured and other rays of pure light separated by refraction in its transmission through a prism, as exhibited on a screen in a darkened chamber.
Dictionary of Nautical Terms
The variously coloured image into which a ray of light is divided on being passed through a prism.
A variety of color or light.
The color spectrum is so beautiful when you see the scope and size of it.
Submitted by MaryC on February 17, 2020
Song lyrics by spectrum -- Explore a large variety of song lyrics performed by spectrum on the Lyrics.com website.
British National Corpus
Rank popularity for the word 'spectrum' in Nouns Frequency: #1872
The numerical value of spectrum in Chaldean Numerology is: 8
The numerical value of spectrum in Pythagorean Numerology is: 7
We're seeing a lot of money put into 5G deployments, 5G-related spectrum, and what we're seeing today is that it's more than likely that there won't be a revenue bump attached to it.
They key is to find one that is broad-spectrum, at least an SPF 30, that the consumer likes and is able and willing to reapply every two hours when outdoors.
If Dr Homer take that pigment away, then the light can enter the stroma -- the little fibers that look like bicycle spokes in a light eye - and when the light scatters it only reflects back the shortest wavelengths and that's the blue end of the spectrum.
I want to know how God created this world. I am not interested in this or that phenomenon, in the spectrum of this or that element. I want to know His thoughts the rest are details.
It's going to be difficult for issuers to come to market now unless they are at the high end of the credit quality spectrum.
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Translations for spectrum
From our Multilingual Translation Dictionary
- espectreCatalan, Valencian
- spektri, kirjoFinnish
- 分光特性, スペクトルJapanese
- spektrum, widmoPolish
- диапазон, спектрRussian
- tayf, spektrumTurkish
- quang phổVietnamese
- späktrum, kölaspäktrumVolapük
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"spectrum." Definitions.net. STANDS4 LLC, 2022. Web. 7 Dec. 2022. <https://www.definitions.net/definition/spectrum>.