Category: Radiation

A level of 220 mSv/yr over a full year is "safe for everyone" providing any ingested radioactivity is safe. In the shorter term, at 40 times this level, 170 mSv…

Having a three-branched nuclear capability eliminated the possibility that an enemy could destroy all of a nation's nuclear forces in a first-strike attack; this, in turn, ensured the credible threat…

Unlike uranium and polonium, radium does not occur freely in nature, and Marie and her assistant Andre Debierne laboriously refined several tons of pitchblende in order to isolate one-tenth gram…

Most dietary guidelines suggest limiting your sodium intake to 1,500–2,300 mg per day. Unlike most table salt, sendha namak is not fortified with iodine. Thus, completely replacing table salt with…

The Transportation Security Administration (TSA) is using body-scanning units at a number of U.S. airports. These body-scanning units traditionally use millimeter-wave technology. Millimeter-wave technology uses non-ionizing radiation in the form…

Does radiation stay in your body after an x-ray? After a radiographic, fluoroscopic, CT, ultrasound, or MRI exam, no radiation remains in your body. For nuclear medicine imaging, a small…

There are numerous similarities between nuclear and solar energy. The most significant one is that they are pollution-free and have no direct emission of carbon dioxide or other greenhouse gases.…

Radiation protection, also known as radiological protection, is defined by the International Atomic Energy Agency (IAEA) as "The protection of people from harmful effects of exposure to ionizing radiation, and…

Once a focus of Spanish missions and Gold Rush prospectors, the Bay Area is best known now for its lifestyle, liberal politics and high-tech industry (Silicon Valley). Why is Bay…

Most ionizing radiation originates from radioactive materials and space (cosmic rays), and as such is naturally present in the environment, since most rocks and soil have small concentrations of radioactive…