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Physics . Often x-rays. a form of electromagnetic radiation, similar to light but of shorter wavelength and capable of penetrating solids and of ionizing gases. such radiation having wavelengths in the range of approximately 0.1–10 nm.

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Wave–particle duality is the concept in quantum mechanics that every particle or quantum entity may be partly described in terms not only of particles, but also of waves. It expresses the inability of the classical concepts "particle" or "wave" to fully describe the behaviour of quantum-scale objects.

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Visible light is a form of electromagnetic (EM)radiation, as are radio waves, infrared radiation, ultraviolet radiation, X-rays and microwaves. Generally,visible light is defined as the wavelengths that are visible to most human eyes.

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Ultraviolet radiation is electromagnetic radiation or light having a wavelength greater than 100 nm but less than 400 nm. ... Ultraviolet radiation has a wavelength longer than that of x-rays but shorter than that of visible light.

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Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as 300 gigahertz (GHz) to as low as 30 hertz (Hz). ... Naturally occurring radio waves are emitted by lightning and astronomical objects.

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The picometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: pm) or picometer (American spelling) is a unit of length in the metric system, equal to 1×10−12 m, or one trillionth (11000000000000) of a metre, which is the SI base unit of length.

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The photoelectric effect is the emission of electrons or other free carriers when light shines on a material. Electrons emitted in this manner can be called photo electrons. This phenomenon is commonly studied in electronic physics, as well as in fields of chemistry, such as quantum chemistry or electrochemistry.

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pertaining to or being in the infrared spectrum that is closest to visible light; it is used for studying red dwarfs, red giants, and other celestial objects.

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Microwave radiation is electromagnetic radiation with a frequency between 300 MHz and 300 GHz (1 GHz to 100 GHz in radio engineering) or a wavelength ranging from 0.1 cm to 100 cm.

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Infrared radiation (IR), sometimes referred to simply as infrared, is a region of the electromagnetic radiation spectrum where wavelengths range from about 700 nanometers to 1 millimeter .Infrared waves are longer than those of visible light, but shorter than those of radio waves.

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gamma rays

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the range of wavelengths or frequencies over which electromagnetic radiation extends.

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Far infrared is often defined as any radiation with a wavelength of 15 micrometers (µm) to 1 mm.

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1. Far infrared: Often defined as any radiation wavelength from 15 micrometers to 1 mm.
2. Electromagnetic spectrum
3. Gamma radiation
4. Infrared radiation
5. Microwave radiation
6. Near infrared
7. Photoelectric effect
8. Picometer
9. Radio radiation
10. Ultraviolet radiation
11. Visible light radiation
12. Wave-particle duality
13. X-ray radiation