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What are the rays used for to take photograph in dark? What are the properties they have? What is the velocity of those rays in vacuum?

What are the rays used for to take photograph in dark? What are the properties they have? What is the velocity of those rays in vacuum?

Grade:11

1 Answers

sumanth
38 Points
8 years ago
X-radiation (composed of X-rays) is a form of electromagnetic radiation. Most X-rays have a wavelength ranging from 0.01 to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (3×1016 Hz to 3×1019 Hz) and energies in the range 100 eV to 100 keV. X-ray wavelengths are shorter than those of UV rays and typically longer than those of gamma rays. In many languages, X-radiation is referred to with terms meaning Röntgen radiation, after Wilhelm Röntgen,[1] who is usually credited as its discoverer, and who had named it X-radiation to signify an unknown type of radiation.[2] Spelling of X-ray(s) in the English language includes the variants x-ray(s), xray(s), and X ray(s).

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