What is the radioactivity in physics?
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What is the radioactivity in physics?
As its name implies, radioactivity is the act of emitting radiation spontaneously. This is done by an atomic nucleus that, for some reason, is unstable; it “wants” to give up some energy in order to shift to a more stable configuration.
Why is it called radioactivity?
Marie and Pierre Curie’s study of radioactivity is an important factor in science and medicine. After their research on Becquerel’s rays led them to the discovery of both radium and polonium, they coined the term “radioactivity” to define the emission of ionizing radiation by some heavy elements.
What is radioactivity and how does it occur?
Radioactivity is the property of some unstable atoms (radionuclides) to spontaneously emit nuclear radiation, usually alpha particles or beta particles often accompanied by gamma-rays.
What is a radioactivity in chemistry?
Radioactivity is the phenomenon of the spontaneous disintegration of unstable atomic nuclei to atomic nuclei to form more energetically stable atomic nuclei. Radioactive decay is a highly exoergic, statistically random, first-order process that occurs with a small amount of mass being converted to energy.
What is radioactivity BYJU’s?
Radioactivity is the phenomenon exhibited by the nuclei of an atom as a result of nuclear instability. In the year 1896, Henry Becquerel discovered this phenomenon. Radioactivity is a process by which the nucleus of an unstable atom loses energy by emitting radiation.
What is radioactivity Wikipedia?
Radioactivity is a measure of the total, local rate of radionuclides decaying per unit time and is dependent upon the total number of atoms, decay constants, and all decay branching pathways for each radionuclide present.
How do you create radioactivity?
Radioactivity is the process by which the nucleus of an unstable atom loses energy by emitting radiation, including alpha particles, beta particles, gamma rays and conversion electrons Although radioactivity is observed as a natural occurring process, it can also be artificially induced typically via the bombarding …
What is decay physics?
Radioactive decay is the random process in which a nucleus loses energy by emitting radiation. This is usually in the form of alpha particles (Helium nuclei), beta particles (electrons or positrons), or gamma rays (high energy photons).
• The rays emitted by radioactive element are called radioactive rays. 5. Thus radioactivity can be defined as:- The phenomenon in which the nucleus of the atom of an element undergoes spontaneous and uncontrollable disintegration (or decay) and emit α, β or γ-rays.
What are the four types of radioactivity?
The radiation one typically encounters is one of four types: alpha radiation, beta radiation, gamma radiation, and x radiation. Neutron radiation is also encountered in nuclear power plants and high-altitude flight and emitted from some industrial radioactive sources.
What are some of the uses of radioactivity?
The best-known uses of radioactivity are perhaps in nuclear power stations and in nuclear weapons. The first atomic weapons made use of a runaway chain reaction to release a huge amount of energy in the form of intense heat, light, and ionizing radiation.
What are some examples of radioactivity?
Radiation Examples. Here are some examples of different types of radiation: ultraviolet light from the sun. heat from a stove burner. visible light from a candle. x-rays from an x-ray machine. alpha particles emitted from the radioactive decay of uranium. sound waves from your stereo.
What are the disadvantages of radioactivity?
DISADVANTAGES OF RADIOTHERAPY Risky. A major drawback of radiotherapy is that is it has side effects and several risk factors. Adverse Effects on Pregnancy. Pregnant women are advised against opting for radiation therapy as it can have adverse effects on both the fetus as well as the women. Expensive. Fatal Accidents. Pros and Cons of Radiotherapy