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X-ray is an [[electromagnetic wave]] with a wavelength of about 10<sup>-10</sup> meters, which is beyond the range of wavelength visible to the human eye.  It is often used in hospitals to produce images of patient's internal organs and bones on a photographic plate.
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X-ray is an [[electromagnetic wave]] with a wavelength of about 10<sup>-10</sup> meters, which is beyond the range of wavelength visible to the human eye.  It is often used in hospitals and dental clinics to produce images of patient's internal organs, bones or teeth on a photographic plate.
 
*X-rays were discovered in 1895 by Wilhelm Conrad Röntgen, who received the first Nobel Prize in Physics in 1901. [http://nobelprize.org/educational_games/physics/x-rays/]
 
*X-rays were discovered in 1895 by Wilhelm Conrad Röntgen, who received the first Nobel Prize in Physics in 1901. [http://nobelprize.org/educational_games/physics/x-rays/]
 
Ron Curtis wrote:
 
Ron Curtis wrote:
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