Radiation : It is the energy in the form of waves or particles which usually comes from an unstable atomic nuclei.
OR
Unstable atomic nuclei releases energy(energised particles or electromagnetic waves) to make itself stable,this energy is known as radiation.
For example
Radiation in the form of waves: x rays,gamma rays,high frequency uv rays. Radiation in the form of particles:thermal neutrons,alpha radiation,beta radition.
Radiation can be artificial or natural.
Uses of radiation
1.Radiation can be used for the production of electricity in the nuclear reactors.
2.Radiation can be used to kill cancer cells or in radiation therapy.
3. Many radioactive isotopes(radiopharmacuticals) are made nowadays to heal from disease.
4.Radiation in the form of x rays is used in diagnosis of many disease in humans.
5. Radiation is also used in the airports for security checkup.
6. Radiation in the form of x rays also used to check any cracks in many materials or in buildings.
7. Radiation can be used to kill micro organisms or harmful bacteria and can make a place sterilise.
Disadvantages or harms of radiation:
1. Radiation can cause cancer.
2.Excess of radiation on a living being can develop disease.
- 3.It can cause heating of some materials.
Effects of radiation on human beings :
Stochastic effects:It is also known as non dosage depend effects of radiation in which the amount of radiation for any effect in humans is not justified or radiation effects can be seen whether the amount of radiation is very small or is very large striking or entering the body.
Non stochastic effects of radiation:these effects of radiation can only be seen when a specific amount of radiation have been reached.Or a threshold of radiation been reached.
Effects of radiation can be somatic or genetic which means that they can be seen in the same person(somatic) or can be seen in the next generation(genetic).
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