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A diagram of the electromagnetic spectrum, showing various properties across the range of frequencies and wavelengths. The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate bands, with different names for the electromagnetic waves within each band.
In physics, electromagnetic radiation (EMR) is the set of waves of an electromagnetic (EM) field, which propagate through space and carry momentum and electromagnetic radiant energy. [ 1 ] [ 2 ] Classically , electromagnetic radiation consists of electromagnetic waves , which are synchronized oscillations of electric and magnetic fields .
The radiation emitted covers the entire electromagnetic spectrum and the intensity of the radiation (power/unit-area) at a given frequency is described by Planck's law of radiation. For a given temperature of a black-body there is a particular frequency at which the radiation emitted is at its maximum intensity.
Electromagnetic – infrared light used in thermal imaging, for example for night vision: 31.5 THz: Electromagnetic – peak of black-body radiation emitted by human body: 10 14: 100 THz: 400 THz to 790 THz: Electromagnetic – visible light, from red to violet: 10 15: 1 petahertz (PHz) 2.47 PHz: Electromagnetic – Lyman-alpha line: 10 16: 10 ...
Different types of electromagnetic radiation. Non-ionizing (or non-ionising) radiation refers to any type of electromagnetic radiation that does not carry enough energy per quantum (photon energy) to ionize atoms or molecules—that is, to completely remove an electron from an atom or molecule. [1]
Absorptions bands in the Earth's atmosphere created by greenhouse gases and the resulting effects on transmitted radiation. In spectroscopy, an absorption band is a range of wavelengths, frequencies or energies in the electromagnetic spectrum that are characteristic of a particular transition from initial to final state in a substance.
Light, visible light, or visible radiation is electromagnetic radiation that can be perceived by the human eye. [1] Visible light spans the visible spectrum and is usually defined as having wavelengths in the range of 400–700 nanometres (nm), corresponding to frequencies of 750–420 terahertz .
Original Edit1 with continuous colour scale Reason Ultra-enc value + svg + high quality (it's a pity the article isn't in the same shape) Proposed caption The electromagnetic spectrum encompasses all electromagnetic radiation - ranging from radio waves through microwaves, infrared, visible light, ultraviolet, x-rays and gamma rays in order of increasing frequency.