![]() 905,804,373 visitors served. |
|
![]() Dictionary/ thesaurus | ![]() Medical dictionary | ![]() Legal dictionary | ![]() Financial dictionary | ![]() Acronyms | ![]() Idioms | ![]() Encyclopedia | ![]() Wikipedia encyclopedia | ? |
X-ray |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.03 sec. |
X-rayElectromagnetic 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. |
|
? Mentioned in | ? References in periodicals archive | ||
|---|---|---|---|
| Hawkinson also generates a simulated X-ray photograph by rubbing pastel on a sheet of fabric wrapped around his body so that the bonier protrusions leave their marks; constructs a graph of the relative circumference of his body as measured at regular intervals from head to toe; and draws himself as if woven from lace. The letter x is represented by painter Harmen Steenwyck--an x-ray photograph of a still life that reveals a mysterious face hidden beneath the paint. The BT Test is designed to detect the presence of breast cancer at the molecular level unlike mammography, which only detects masses or gross changes in breast tissue via an X-ray photograph. |
| Free Tools: |
For surfers:
Browser extension |
Word of the Day |
Help
For webmasters: Free content NEW! | Linking | Lookup box | Double-click lookup | Partner with us |
|
|---|