Search results
Results from the WOW.Com Content Network
This leaves anyone exposed to penetrating gamma rays at high risk of ARS. Naturally, shielding the entire body from high energy gamma radiation is optimal, but the required mass to provide adequate attenuation makes functional movement nearly impossible.
The exposure to 4.5 Gray of penetrating gamma rays has many effects that occur at different times: In 24 hours: [10] vomiting; diarrhea; These will usually abate after 6–7 days. Within 3–4 weeks there is a period of extreme illness. [10] severe bloody diarrhea, indicating intestinal disorders causing fluid imbalance; extensive internal bleeding
A gamma ray, also known as gamma radiation (symbol γ), is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei.It consists of the shortest wavelength electromagnetic waves, typically shorter than those of X-rays.
5 February 1989 – Three workers were exposed to gamma rays from the 60 Co source in a medical products irradiation plant in San Salvador, El Salvador. The most exposed person died; another lost two limbs. A number of safety systems at the plant had been disabled, and workers were unaware of the danger posed by the radioactive source. [29]
With medical attention, radiation exposure is survivable to 200 rems of acute dose exposure. If a group of people is exposed to a 50 to 59 rems acute (within 24 hours) radiation dose, none will get radiation sickness. If the group is exposed to 60 to 180 rems, 50% will become sick with radiation poisoning. If medically treated, all of the 60 ...
These were distributed and used in multiple cities across Mexico and the United States and exposed an estimated four thousand people to radiation. [85] 1985 to 1987: The Therac-25 accidents. A radiation therapy machine was involved in six accidents, in which patients were exposed to massive overdoses of radiation. 4 fatalities, 2 injuries. [86]
Exposing skin to infrared radiation near visible light (IR-A) leads to increased production of free radicals. [41] Short-term exposure can be beneficial (activating protective responses), while prolonged exposure can lead to photoaging. [42] Another important factor is the distance between the worker and the source of radiation.
The radiation warning symbol (trefoil) Alpha radiation consists of helium-4 nucleus and is readily stopped by a sheet of paper. Beta radiation, consisting of electrons, is halted by an aluminium plate. Gamma radiation is eventually absorbed as it penetrates a dense material. Lead is good at absorbing gamma radiation, due to its density.