RöNTGEN'S discovery of X-rays at the end of the year 1895 began ... penetrating radiations which resulted in the discovery of radioactivity. Yet on looking back it seems somewhat strange that ...

What are X rays and what do they do? X rays are a form of electromagnetic radiation that can penetrate or pass through the human body and produce shadow-like images of bones and some organs. The ...

Wilhelm Röntgen discovered X-rays while experimenting with cathode rays and crystals, leading to the realization that ...

The radiation we receive from outer space is called cosmic radiation or cosmic rays. We also receive exposure from man-made radiation, such as X-rays, radiation used to diagnose diseases and for ...

Most radioactive background activity comes from natural sources such as: Human behaviour adds slightly to the background activity that we are exposed to through medical X-rays, radioactive waste ...

The problem: Typical bitewing X-rays, which show the crowns of upper and lower teeth, don't expose you to a lot of radiation. But because the dosage is cumulative and people get so many of the X ...