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X-radiation (composed of X-rays) is a form of electromagnetic radiation. X-rays have a wavelength in the range of 10 to 0.01 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (30 × 1015 Hz to 30 × 1018 Hz) and energies in the range 120 eV to 120 keV. They are shorter in wavelength than UV rays. In many languages, X-radiation is called Röntgen radiation after one of its first investigators, Wilhelm Conrad Röntgen who had originally called them X-rays meaning an unknown type of radiation.Novelline, Robert. Squire's Fundamentals of Radiology. Harvard University Press. 5th edition. 1997. ISBN 0674833392.rp: 1-2

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Wikipedia About Xray

Anna%20Berthe%20Roentgen.gif

X-radiation (composed of X-rays) is a form of electromagnetic radiation. X-rays have a wavelength in the range of 10 to 0.01 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (30 × 1015 Hz to 30 × 1018 Hz) and energies in the range 120 eV to 120 keV. They are shorter in wavelength than UV rays. In many languages, X-radiation is called Röntgen radiation after one of its first investigators, Wilhelm Conrad Röntgen who had originally called them X-rays meaning an unknown type of radiation.Novelline, Robert. Squire's Fundamentals of Radiology. Harvard University Press. 5th edition. 1997. ISBN 0674833392.rp: 1-2

X-rays are primarily used for diagnostic radiography and crystallography. As a result, the term X-ray is metonymically used to refer to a radiographic image produced using this method, in addition to the method itself. X-rays are a form of ionizing radiation and as such can be dangerous.

X-rays span 3 decades in wavelength, frequency and energy. From about 0.12 to 12 keV they are classified as soft X-rays, and from about 12 to 120 keV as hard X-rays, due to their penetrating abilities.

The distinction between X-rays and gamma rays has changed in recent decades. Originally, the electromagnetic radiation emitted by X-ray tubes had a longer wavelength than the radiation emitted by radioactive nuclei (gamma rays). So older literature distinguished between X- and gamma radiation on the basis of wavelength, with radiation shorter than some arbitrary wavelength, such as 10−11 m, defined as gamma rays. However, as shorter wavelength continuous spectrum "X-ray" sources such as linear accelerators and longer wavelength "gamma ray" emitters were discovered, the wavelength bands largely overlapped. The two types of radiation are now usually defined by their origin: X-rays are emitted by electrons outside the nucleus, while gamma rays are emitted by the nucleus.

Units of measure and exposure

  • The coulomb per kilogram (C/kg) is the SI unit of ionizing radiation exposure, and measures the amount of radiation required to create 1 coulomb of charge of each polarity in 1 kilogram of matter.
  • The röntgen (R) is an obsolete older traditional unit of exposure, which represented the amount of radiation required to create 1 esu of charge of each polarity in 1 cubic centimeter of dry air. 1 roentgen = 2.58×10−4 C/kg

However, the effect of ionizing radiation on matter (especially living tissue) is more closely related to the amount of energy deposited rather than the charge. This is called the absorbed dose:

  • The gray (Gy) which has units of (J/kg), is the SI unit of absorbed dose which is the amount of radiation required to deposit 1 joule of energy in 1 kilogram of any kind of matter.
  • The rad is the (obsolete) corresponding traditional unit, equal to 0.01 J deposited per kg. 100 rad = 1 Gy.

Search results for Xray

Rainer Brockerhoff :: XRay :: Overview

XRay, the File/Folder Information Utility for Mac OS X ... [XRay 1.1 has some issues with Leopard, unfortunately, and no updates are ...www.brockerhoff.net/xray/

Xray

Xray. Project Home • Blog • Forums • Known Issues • External Project Link • Contact Project ... HX versions of the Xray interface for Windows/Mac available! ...xray.riaforge.org/

XRAY - Stock Quote for DENTSPLY International Inc - MSN Money

XRAY - Get a stock quote for DENTSPLY International Inc market quotes include the latest XRAY price and fundamental investing data, price charts and news. You can...moneycentral.msn.com/detail/stock_quote?Symbol=XRAY

XRAY :: for web developers

Complete CSS Guide and Reference - contents ... XRAY is a bookmarklet for Internet Explorer 6 ... Go here for more detailed instructions or more about XRAY. ...www.westciv.com/xray/

XRAY: Summary for DENTSPLY International Inc. - Yahoo! Finance

(XRAY) including quote performance, Real-Time ECN, technical chart analysis, key ... Trading Report for (XRAY) Detailed Technical Analysis + Free Market Timing ...finance.yahoo.com/q?s=XRAY

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TWENTY YEARS AGO

Belmond Independent1989 Christine Turner of Belmond has been chosen by Eimbrink Unit No. 35 to attend the 44th annual session of Iowa American Legion Auxiliary Girls State on June 10-17.http://www.zwire.com/site/news.cfm?BRD=1907&dept_id=150700&n...

Escaped Bryan Co. inmate captured

KXII ShermanDURANT, OK -- The Bryan County Jail inmate who escaped from the Medical Center of Southeastern Oklahoma two days ago is now in custody. The Oklahoma Highway Patrol says Billy J. Wallace, 18, was captured just after 5:30 a.m. Wednesday morning. Wallace was temporarily hiding out at a church in Durant.http://www.kxii.com/home/headlines/44335767.html

International Atomic Energy Agency Calls For Enhanced Radiation Protection Of Patients

Medical News TodaySafety Specialists Warn Against Overuse of New Imaging Devices Advances in medical imaging techniques are allowing doctors to detect hidden diseases and make ever more accurate diagnoses. But radiation safety experts at the International Atomic Energy Agency (IAEA) say that overuse of high-tech scanning procedures may unnecessarily expose patients to increased radiation levels.http://www.medicalnewstoday.com/articles/148354.php

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PPS figures for April have been released - can we go on like this?

Politics.ieXray says we have a large unskilled unemployed population - but I suspect a very significant percentage of the unemployed are well educated and have technical or other qualifications. Two members of my family and lots of their friends with ... http://www.politics.ie/current-affairs/66590-pps-figures-apr...

International Atomic Energy Agency Calls For Enhanced Radiation ...

Medical News TodayAccording to the latest estimates of the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), as many as four billion diagnostic Xray examinations are carried out worldwide each year. This represents an increase of more ... http://www.medicalnewstoday.com/articles/148354.php

GITMO camp X-ray exposes MI5''s secret deals to recruit informants

Top News IndiaLondon, May 6 : Britain's MI5 secretly tried to hire British men held in Guantanamo Bay and other US prison camps by promising to protect them from their American captors and help secure their return home to the United Kingdom, The Independent has ... http://www.topnews.in/gitmo-camp-xray-exposes-mi5s-secret-de...

First Look: Leopard first looks: The rest

Mac CentralThere’s a new Interface Builder, which Apple says will let developers perform refactoring operations and add animations to their apps. A new feature, Xray, uses a GarageBand-style interface to track and compare user-event and performance metrics ... http://www.macworld.com/2006/08/firstlooks/leowrap/index.php

Reviews in Brief

Mac CentralIf that feature is all you need, Rainer Brockerhoff's XRay does an excellent job at a fraction of the price.) Another intelligent feature allows you to take snapshots of folders before and after changing their contents, so you can compare them ... http://www.macworld.com/2002/09/reviews/inbrief/

Search results for Xray

MedlinePlus Medical Encyclopedia: X-ray

Alternative Names Return to top. Radiography. Definition Return to top. X-rays are a form of electromagnetic radiation, just like visible light.http://www.nlm.nih.gov/medlineplus/ency/article/003337.htm

x-ray definition | Dictionary.com

Copy & paste this link to your blog or website to reference this pagehttp://dictionary.reference.com/browse/x-ray

x-ray: Definition from Answers.com

x-ray also X-ray ( ) n. also x ray or X ray A relatively high-energy photon having a wavelength in the approximate range from 0.01 to 10 nanometershttp://www.answers.com/topic/x-ray

X-Rays

Fluoroscope: This is a demonstration of an X-ray machine called a fluoroscope. To use it, just "grab" the small wire-frame with your pointer, hold down the button, and ... http://www.colorado.edu/physics/2000/xray/

Bone X-ray

Current and accurate information for patients about Bone X-ray. Learn what you might experience, how to prepare for the exam, benefits, risks and more.http://www.radiologyinfo.org/en/info.cfm?pg=bonerad

Wikipedia results for Xray

X-ray - Wikipedia, the free encyclopedia

X-radiation (composed of X-rays) is a form of electromagnetic radiation. X-rays have a wavelength in the range of 10 to 0.01 nanometers, corresponding to frequencies in the range ... http://en.wikipedia.org/wiki/X-ray

X-ray machine - Wikipedia, the free encyclopedia

An X-ray machine is a device used by radiographers to acquire an x-ray image. They are used in various fields, notably medicine and security.http://en.wikipedia.org/wiki/X-ray_machine

X-ray astronomy - Wikipedia, the free encyclopedia

X-ray astronomy is an observational branch of astronomy, which deals with the study of X-ray emission from celestial objects. X-ray radiation is absorbed by the Earth 's atmosphere ... http://en.wikipedia.org/wiki/X-ray_astronomy

X-ray crystallography - Wikipedia, the free encyclopedia

X-ray crystallography is a method of determining the arrangement of atoms within a crystal, in which a beam of X-rays strikes a crystal and scatters into many different directions.http://en.wikipedia.org/wiki/X-ray_crystallography

X-ray burster - Wikipedia, the free encyclopedia

X-ray bursters are one class of X-ray binary stars exhibiting periodic and rapid increases in luminosity (typically a factor of 10 or greater) peaked in the X-ray regime of the ... http://en.wikipedia.org/wiki/X-ray_burster
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Skull x-ray reveals 34 nails

Skull x-ray reveals 34 nailsApril 24: Australian police release this x-ray showing 34 nails embedded in an Chinese immigrant's skull. Msnbc.com's Dara Brown reports. (msnbc.com)Windows Media - Video

Police release nail murder x-ray

Police release nail murder x-rayAustralian police release an x-ray of the skull a murdered Chinese immigrant pierced with nails.Flash - Video

Bud Light X-Ray Vision Ability

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Answers for Xray

mudbugi want to see an xray taken post op cholescstectomy to see the clips that were placed during the procedure?mudbugIf you already had this xray taken, then just go to the radiology department of the hospital and ask for a copy of your films (on CD or old-fashioned). You may have to pay for the copy (the cost of t...KrisHow do I become an xray tech through a hospital?KrisKaiser Permanente, in CA, used to offer a very low cost x-ray program, and you signed a contract to work for them for (I think it was) two years after you were a licensed RT. I know they still have ...meeeooowwwIs it safe to walk through an xray machine when pregnant?meeeooowwwIs it just a metal detector? If so there is no radiation. Walk through metal detectors use a low-frequency electromagnetic field to look for weapons. Anything that generates or uses electricity, such...rosemary512002what is the worse scenario on finding an infiltrate on xray?rosemary512002an infiltrate can mean pneumonia, but it most likely is from the bronchitis. it is just mucous in the bronchiole tubes. btw... COPD is chronic obstructive pulmonary disease... it includes asthma an...KrisHow do you get Banner Hospital to pay for my xray technician school?KrisTalk to their human resources department. My guess is that they will pay for people who are already employees and want to move up, not just random people, but I suppose if they are in desperate need,...
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