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Some people worry that X-rays aren't safe because radiation exposure can cause cell mutations that may lead to cancer.

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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.

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A prism can break white light up into the visible light spectrum. Visible light is a form of electromagnetic (EM) radiation, as are radio waves, infrared radiation, ultraviolet radiation, X-rays and microwaves.

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Ultraviolet (UV) designates a band of the electromagnetic spectrum with wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays. UV radiation is present in sunlight constituting about 10% of the total lightoutput of the Sun.

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Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.

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Picometer is a length measurement unit. A picometer (pm) is a derived metric measurement unit of length. The metric unit prefix pico means one trillionth, or one (1) with eleven (11) nulls in front of it, i.e. 0.000,000,000,001 or 1×10⁻¹².

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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.

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Near-infrared spectroscopy (NIRS) is a spectroscopic method that uses the near-infrared region of the electromagnetic spectrum (from 780 nm to 2500 nm).

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Microwave ovens. Microwave ovens work by using very high levels of a certain frequency of RF radiation(in the microwave spectrum) to heat foods. When microwaves are absorbed by food containing water, it causes the water molecules to vibrate, which produces heat.

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Infrared radiation is a type of electromagnetic radiation, as are radio waves, ultraviolet radiation, X-rays and microwaves.

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A gamma ray or gamma radiation, is a penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei.

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Far infrared (FIR) is a region in the infrared spectrum of electromagnetic radiation.

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