Radioactiviy Benefits and Drawbacks
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Dear readers, this month we are going to talk about a natural occurrence, radioactivity. But before talking about it scientifically and in detail, here is a little introduction saying how it was discovered and how but also to introduce you to some terms that are specific to radioactivity. In this article we will discuss the benefits and the drawbacks of radioactivity.
Introduction: Radioactivity is a spontaneous disintegration of atomic nuclei by the emission of subatomic particles called alpha particles and beta particles, or of electromagnetic rays called X rays and gamma rays.
The phenomenon was discovered in 1896 by the French physicist Antoine Henri Becquerel, almost by accident, when he observed that the element uranium can blacken a photographic plate, although separated from it by glass or black paper. He also observed that the rays that produce the darkening are capable of discharging an electroscope, indicating that the rays possess an electric charge. In 1898 the French chemists Marie Curie and Pierre Curie deduced that radioactivity is a phenomenon associated with atoms, independent of their physical or chemical state. They also deduced that because the uranium-containing ore pitchblende is more intensely radioactive than the uranium salts that were used by Becquerel, other radioactive elements must be in the ore. They carried through a series of chemical treatments of the pitchblende that resulted in the discovery of two new radioactive elements, polonium and radium. Marie Curie also discovered that the element thorium is radioactive, and in 1899 the radioactive element actinium was discovered by the French chemist Andr Louis Debierne...