* November 8 - Discovery of X Rays----- W.K. Roentgen * January 3 - X-Ray report made public * February - Discovery of Radioactivity -----H. Becquerel * March 3 - First reports of possible x-ray injury; damage to eyes -----T.A. Edison, W.J. Morton * March 14 - Concern expressed over possibility of x-ray injury -----F. Battelli * April 10 - Epilation noted from x-ray exposure -----J. Daniel * April 18 - Skin effects first noted -----L. G. Stevens * July - First x-ray protective device: a heavy glass plate to protect the eyes during dental radiography -----W.H. Rollins * Reports of accidental injury (burns) -----H.D. Hawks * November 18 - Deliberately induced experimental injury (burns) -----E. Thomson * Gold leaf electroscope used to make ionization measurements -----L. Benoist * Air thermometer used to measure energy transfer by x-rays -----E. Dorn * January - Aluminum filter used as protective device -----E. Thomson * May - Dark adaptation prior to fluoroscopy suggested -----F.H. Williams * July - Leaded x-ray tub housing; collimators -----W.H. Rollins * July - Word "radioactivity" coined -----P. & M. Curie * December - Radium discovered -----P. & M. Curie * Gamma rays discovered -----P. Villard * April - Radiographer licensure recommended to protect public -----J. Dennis * May - Malpractice award for x-ray burns * Ozone hazard of x-ray generators noted * Listing of protective devices (gloves, aprons, etc.) in x-ray catalog -----R. Friedlander Co. * Increased target to skin distance to reduce skin dose -----M.K. Kassabian * January 3 - X-ray lethality to person alleged * Skin burn caused by radium carried on person -----H. Becquerel * X-ray lethality to mammals demonstrated experimentally -----W.H. Rollins * X-ray lethality to mammalian fetus demonstrated -----W.H. Rollins * Fractionation of exposure in fluoroscopy -----W.H. Rollins * Protection committee within ARRS proposed -----S.H. Monell * First direct reading radiation instrument; spinthariscope -----W. Crookes * Ocotober - First death in x-ray pioneer attributed to cumulative overexposure -----C.M. Dally * Radiation unit based on ionization first proposed -----M. Franklin * Law of radiosensitivity of tissues put forth -----J. Bergonie & R. Tribondeau * Mutation by x-ray reported in toads -----C.R. Bardeen * Photographic plate carried in pocket for monitoring x-ray exposure -----R.V. Wagner * Use of gas-filled tubes for detection of radiation -----E. Rutherford * International radium standard and Curie unit -----M. Curie * Half value layer concept -----T. Christan * Hot cathode x-ray tubes and tungsten targets permitting higher voltages -----W.D. Coolidge * British Roentgen Society adopts radiation protection recommendations * First standing x-ray protection committee -----ARRS * British X-Ray and Radium Protection Committee issues first memorandum * American Roentgen Ray Society adopts radiation protection rules * Film badges for personnel monitoring -----G. Pfahler * First "tolerance dose" proposed -----A. Mutscheller * Genetic effects of x-rays shown -----H.J. Muller * First commercial U.S. ionization chamber -----J. Victoreen * Roentgen unit formally adopted * International X-Ray and Radium Protection Committee formed (forerunner of ICRP) * U.S. Advisory committee on X-Ray and Radium Protection formed (forerunner of NCRP) * First portable survey meter -----L.S. Taylor * USACXRP publishes first recommendations - 0.2 R/day * Concept of greater permissible dose for partial body irradiation (hands) introduced -----G. Failla * Discover of the neutron -----E. Chadwick * ICXRP recommends permissible dose of 0.2 R/day * 0.1 R/day (0.5 R/wk) * Statement of the Bragg-Gray principle of cavity ionization -----L.H. Gray * USACXRP recommends reduction in permissible dose to 0.1 R/day * USACXRP recommends adoption of maximum body burden of 0.1 microCi for radium * Suggested maximum permissible dose of 0.02 R/day -----L.S. Taylor * Manhattan District * 4 R/wk shown to cause injury -----H.M. Parker * Maximum permissible concentration for inhaled radioactivity introduced -----H.M. Parker * Rem and rep introduced -----H.M. Parker * 0.3 R/wk * 0.3 rem/wk
There is no antonym. An xray is a wavelength. There is no opposite.
when taking a dental xray how do u make it appear on the xray more darker in color?
had a chest xray, there was a shadow over my heart what is it
You should check out RC XRAY. They are an online dealer who only sells XRAY RC cars and parts through their store. This includes the XRAY M18T PRO.
No. Neither X-Ray nor xray are allowed in Scrabble.
XRAY Model Racing Cars was created in 2000.
Yes, XRAY is a company. If you are referring to the electromagnetic radiation, x-ray what you mean.
An xray technician is commonly referred to as a radtech or radiation technician in a medical setting.
it is a timeline that has multiple other timelines in it
DENTSPLY International Inc. (XRAY) had its IPO in 1987.
xray tech...how needs doctors anyway!
A non-linear timeline.