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1. Dictionary

   spectrum

   /ˈspɛktrəm/

   noun

   • 1. a band of colours, as seen in a rainbow, produced by separation of the components of light by their different degrees of refraction according to wavelength.
   • ▪ 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 such characteristics as frequency, charge, and energy.
   • 2. used to classify something in terms of its position on a scale between two extreme points: "the left or the right of the political spectrum"
   • ▪ a wide range: "self-help books are covering a broader and broader spectrum"

   Word Origin early 17th century (in the sense ‘spectre’): from Latin, literally ‘image, apparition’, from specere ‘to look’.

   Scrabble Points: 14

   • S

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   • P

     3

   • E

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   • C

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   • T

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   • R

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   • U

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   • M

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2. www.britannica.com › science › spectrumSpectrum | Definition, Examples, & Facts | Britannica

   www.britannica.com › science › spectrum

   • Cached

   Jun 17, 2024 · Spectrum, in physics, the intensity of light as it varies with wavelength or frequency. An instrument designed for visual observation of spectra is called a spectroscope, and an instrument that photographs or maps spectra is called a spectrograph.

   • Continuous

     Other articles where continuous spectrum is discussed:...

   • Band

     Other articles where band spectrum is discussed: spectrum:...

   • Line SPECTRUM

     Other articles where line spectrum is discussed:...

   • Emission SPECTRUM

     Other articles where emission spectrum is discussed:...

3. www.britannica.com › science › spectroscopySpectroscopy | Definition, Types, & Facts | Britannica

   www.britannica.com › science › spectroscopy

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   Jun 14, 2024 · Spectroscopy, study of the absorption and emission of light and other radiation by matter, as related to the dependence of these processes on the wavelength of the radiation. Spectroscopic analysis has been crucial in the development of the most fundamental theories in physics.

4. Videos

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     9:56

     youtube.com

     Electromagnetic Spectrum - Basic Introduction

     23 Aug 2022

     238.6K views

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     3:20

     youtube.com

     Electromagnetism 101 | National Geographic

     15 Nov 2018

     1.4M views

   • 

     4:25

     study.com

     Continuous Spectrum | Definition, Types & Examples

     13 Aug 2016

     108K views

   View all

5. www.britannica.com › science › lightLight | Definition, Properties, Physics, Characteristics, Types...

   www.britannica.com › science › light

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   Jun 11, 2024 · light, electromagnetic radiation that can be detected by the human eye. Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less than about 1 × 10 −11 metre to radio waves measured in metres.

6. www.merriam-webster.com › medical › visible spectrumVisible spectrum Definition & Meaning | Merriam-Webster Medical

   www.merriam-webster.com › medical › visible spectrum

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   5 days ago · The meaning of VISIBLE SPECTRUM is the part of the electromagnetic spectrum to which the human eye is sensitive extending from a wavelength of about 400 nm for violet light to about 700 nm for red light.

7. www.gophotonics.com › whitepapers › detailsSpectral bands: What they are and why they matter for ... -...

   www.gophotonics.com › whitepapers › details

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   6 days ago · Light exists on a spectrum, and this guide explains that spectrum, its basis, and the varying ways in which its properties are exploited in the many different spectral bands.

8. www.aljazeera.com › news › 2024/6/24UK general elections: Which are the main parties, what are their...

   www.aljazeera.com › news › 2024/6/24

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   Jun 24, 2024 · Political parties are vying for votes, with promises covering taxes, immigration and even re-joining the EU.

9. www.merriam-webster.com › dictionary › a broad spectrumA broad spectrum Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › a broad spectrum

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   Jun 27, 2024 · The meaning of A BROAD SPECTRUM is a range of many different kinds. How to use a broad spectrum in a sentence.