x ray

Definition of x ray in English English dictionary: Electromagnetic radiation of extremely short wavelength (100 nanometres to 0.001 nanometre) produced by the deceleration of charged particles or the transitions of electrons in atoms. X rays travel at the speed of light and exhibit phenomena associated with waves, but experiments indicate that they can also behave like particles (see wave-particle duality). On the electromagnetic spectrum, they lie between gamma rays and ultraviolet radiation. They were discovered in 1895 by Wilhelm Conrad Röntgen, who named them X rays for their unknown nature. They are used in medicine to diagnose bone fractures, dental cavities, and cancer; to locate foreign objects in the body; and to stop the spread of malignant tumours. In industry, they are used to analyze and detect flaws in structures; electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target; An X-ray machine; The letter X in the ICAO spelling alphabet; A radiograph: a photograph made with X-rays
The doctor ordered some X-rays of my injured wrist..; To take a radiograph of; to obtain an image of using X-ray radiation, especially for the purpose of medical diagnostic evaluation
Of course there was nothing wrong with my left wrist. They X-rayed the wrong arm!.; Of or having to do with X-rays
I had to put my bags through an X-ray scanner at the airport.; Short wavelength electromagnetic radiation usually produced by bombarding a metal target in a vacuum. Used to create images of the internal structure of objects; this is possible because X-rays pass through most objects and can expose photographic film
X-rays are light with a wavelength between 0.1 and 10 nm.
X rays: Roentgen rays
X-ray: If someone or something is X-rayed, an X-ray picture is taken of them. All hand baggage would be x-rayed They took my pulse, took my blood pressure, and X-rayed my jaw. to photograph the inside of someone's body using X-rays
X-ray: An X-ray is a picture made by sending X-rays through something, usually someone's body. She was advised to have an abdominal X-ray
X-ray: X-rays are a type of radiation that can pass through most solid materials. X-rays are used by doctors to examine the bones or organs inside your body and are also used at airports to see inside people's luggage
x rays: The Röntgen rays; so called by their discoverer because of their enigmatical character
x-ray: a machine that used radiation to produce pictures of the inside of the body
x-ray: take an x-ray of something or somebody; "The doctor x-rayed my chest"
x-ray: A band of the Spectrum between the ultraviolet and the gamma-ray, i e light that is so blue humans cannot see it Photons of X-ray light are more energetic than photons in the ultraviolet but less energetic than photons in the gamma-ray X-radiation can go through human skin tissue but is stopped by dense bones This property thus makes X-rays valuable in medicine
x-ray: the region of the electromagnetic spectrum defined by radiation (photons) energies between 1 thousand and 1 million eV (or wavelengths between 0 001 and 1 nanometer); this waveband is between ultraviolet and gamma-radiation in the electromagnetic spectrum
x-ray: High frequency electromagnetic ray of short wave-length, capable of penetrating most solid substances
x-ray: – electromagnetic energy used to produce images of bones, organs, and internal tissues
x-ray: Highly penetrating radiation similar to gamma rays Unlike gamma rays, X-rays do not come from the nucleus of the atom, but from the surrounding electrons They are produced by electron bombardment When these rays pass through an object they give a shadow picture of the denser portions
x-ray: The part of the electromagnetic spectrum whose radiation has somewhat greater frequencies and smaller wavelengths than those of ultraviolet radiation Because x-rays are absorbed by the Earth's atmosphere, x-ray astronomy is performed in space
x-ray: Light that is so blue humans cannot see it A band of the spectrum between the ultraviolet and the gamma-ray Photons of X-ray light are more energetic than photons in the ultraviolet but less energetic than photons in the gamma-ray X-radiation can go through human skin tissue but is stopped by dense bones This property thus makes X-rays valuable in medicine
x-ray: a diagnostic test which uses invisible electromagnetic energy beams to produce images of internal tissues, bones, and organs onto film
x-ray: Electromagnetic radiation of very short wavelength lying within the wavelength interval of 0 1 to 1 5 angstroms (between gamma rays and ultraviolet radiation) X-rays penetrate various thicknesses of all solids, and they act on photographic plates in the same manner as light Secondary x-rays are produced whenever s-rays are absorbed by a substance In the case of absorption by a gas, this results in ionization
x-ray: High-energy radiation used in low doses to diagnose diseases and in high doses to treat cancer
x-ray: high-energy electromagnetic radiation that is used in low doses to diagnose disease and in high doses to treat cancer
x-ray: Electromagnetic radiation of a very short wavelength and very high-energy X-rays have shorter wavelengths than ultraviolet light but longer wavelengths than cosmic rays
x-ray: the part of the electromagnetic spectrum whose radiation has somewhat greater frequencies and smaller wavelenghts than those of ultraviolet radiation Because x-rays are absorbed by the Earth's atmosphere, x-ray astronomy is performed in space Y
x-ray: Electromagnetic radiation of very short wavelength (less than 1 nm) and very high energy; x-rays have shorter wavelengths than ultraviolet light but longer wavelengths than cosmic rays "Soft" x-rays are those of energies less than 20 keV, or wavelengths longer than 0 05 nm
x-ray: A high energy form of electromagnetic radiation with very short wavelengths (less than 1 x 10-8 metres) For more information see How X-rays work (How Stuff Works, USA) and From X-rays to synchrotron light (ELETTRA Synchrotron Light Laboratory, Italy)
x-ray: electromagnetic energy used to produce images of bones, organs, and internal tissues
x-ray: An X-ray is a form of electromagnetic radiation with a very short wave length (see radiation)
x-ray: examine by taking x-rays
x-ray: Electromagnetic radiation with wavelengths in the range of 0 00001 to 0 01 microns (micron = millionth of a meter)
x-ray: Electromagnetic radiation used to diagnose (low energy) and treat (high energy) disease
x-ray: {i} roentgen ray, short-wave electromagnetic radiation able to penetrate solids; photograph created by means of x-rays (usually for medical purposes)
x-ray: Electromagnetic radiation characterised by its high energy and short wavelength It is a penetrating type of radiation, similar to, but lower in energy, than a gamma ray X-rays are associated with transitions of electrons in the inner atomic orbitals
x-ray: A form of high energy radiation on the electromagnetic spectrum
x-ray: Electromagnetic radiation with wavelengths between ultraviolet and gamma rays
x-ray: Electromagnetic radiation of very short wavelength and very high energy; x-rays have shorter wavelengths than ultraviolet light but longer wavelengths than cosmic rays