Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability. Because the nucleus experiences the intense conflict between the two strongest forces in nature, it should not be surprising that there are many nuclear isotopes which are unstable and emit some kind of radiation. The most common types of radiation are called alpha, beta, and gamma radiation, but there are several other varieties of radioactive decay.
Radioactive decay rates are normally stated in terms of their half-lives, and the half-life of a given nuclear species is related to its radiation risk. The different types of radioactivity lead to different decay paths which transmute the nuclei into other chemical elements. Examining the amounts of the decay products makes possible radioactive dating.
Radiation from nuclear sources is distributed equally in all directions, obeying the inverse square law.
Henri Becquerel discovered radioactivity in 1896 while conducting experiments with uranium salts. He accidentally found that photographic plates wrapped in black paper near a sample of uranium salts became fogged, indicating the emission of radiation from the uranium. This unexpected discovery led to further research and the development of the concept of radioactivity.
gamma radiationA2 perhaps neutrons.
No, radioactivity cannot be canceled. Radioactivity is a natural process where unstable atomic nuclei release energy in the form of radiation. While the rate of radioactivity can decrease over time as the unstable nuclei decay, the process itself cannot be canceled.
A scientist who studies radioactivity is called a nuclear physicist or a radiologist.
Henri Becquerel was a French scientist who was credited for the discovery of radioactivity. He was credited in 1896.
Yes.
spontaneous decay of unstable atomic nuclei.
Marie Curie died in 1934 due to aplastic anemia caused by her prolonged exposure to radiation from her research work on radioactivity.
Ernest Rutherford
Radioactivity is caused by unstable atoms, that break apart.
spontaneous disintegration of atomic nuclei
The radioactivity is caused by the the instability of several atomic nuclei; and this instability comes from the ratio protons/neutrons in the nucleus.
No, it was discovered by Marie and Pierre Curie. Other scientists also contributed, such as Henri Bequerel. (Bequerel is the S.I unit for radioactivity). No, Marie Curie discovered and named radioactivity. Sadly her research into radiation caused her death.
I thought Marie Curie had something to do with it because she died from lukimeia which was caused from her being exposed to it :)
It is a man-made element and, due to its high radioactivity does not exist in nature.
No, I don't think she did. I guess she died of old age.
Radioactivity is caused by the instability of an atom's nucleus. An unstable nucleus can emit particles or energy in the form of radiation in order to become more stable. This process is known as radioactive decay.