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electromagnetic spectrum

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electromagnetic spectrum

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The spectrum of electromagnetic waves ranges from low-frequency radio waves to high-frequency gamma …
(credit: © Merriam-Webster Inc.)
Total range of frequencies or wavelengths of electromagnetic radiation. The spectrum ranges from waves of long wavelength (low frequency) to those of short wavelength (high frequency); it comprises, in order of increasing frequency (or decreasing wavelength): very-low-frequency to ultrahigh-frequency radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. In a vacuum, all waves of the electromagnetic spectrum travel at the same speed: 299,792,458 m/sec (186,282 mi/sec).


electromagnetic spectrum [i¦lek·trō·mag′ned·ik ′spek·trəm]
(electromagnetism)
The total range of wavelengths or frequencies of electromagnetic radiation, extending from the longest radio waves to the shortest known cosmic rays.


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The sensors can detect part of the electromagnetic spectrum that emits energy from the body at wavelengths of one millimetre.
So, depending on which region of the electromagnetic spectrum a telescope uses to look at the night sky, the result will be a very different picture.
The company's Multi-Spectral Signature Management Systems are made of a selection of materials designed to exhibit radiance and reflectance capabilities as well as absorption and scattering features which dramatically reduce the ultraviolet, visual, near infrared, thermal and radar signature to protect, as the company explains, against all known sensors operating within the electromagnetic spectrum.
 
 
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