Radiation

RADIOACTIVITY of import is blocked by make-up. Its positively aerated. Its bear on by magnetic field. They come home gold foil. of import radiation is aforementioned(prenominal) as Helium atom. It is delineated by 4 He or 4 ? 2 2 genus important is negatively charged and is blocked by magnetic field. Its stop by Aluminium. It is represented by 0 e or 0 ? -1 -1 da Gamma is not affected by magnetic field. It can penetrate lead. They are electromagnetic waves. just about isotopes are unstable i.e effect break into smaller move to release important, of import, and Gamma rays, a process called radioactive decay. half(prenominal)(prenominal) life is a time taken for one-half the atoms to de cay. Alpha decay: Radium(Ra) decays by Alpha liberation to become Radon(Rn) 226 Ra 222Rn + 4 He 88 86 2 Beta decay: Polonium (Po) decay by Beta discharge to become Astatine (At) 218 Po 218 At + 0 e 84 85 -1 Gamma release Gamma emission causes no change in mass number or atomic number. Half life This is the time taken for half the atoms to decay. Uses of radioactivity: 1. Radioactive fertiliser can be execute to plants and then traced through the plant using a Geiger counter. This regularity acting is employ to develop better fertilisers. 2. It can be utilise to detect conditions of internal body organs equivalent kidneys. 3. It is used to detect leaks from a pipeline carrying oil or gas. This saves t ake away time. 4. Sterilising. Gamma-rays c! an be used to wipe out bacteria, mould and insects in foods, even after the food has been packaged. This prolongs the shelf-life of the food. 5. oppressiveness control. In paper mills, the thickness of the paper can be controlled by measurement how much beta-radiation passes...If you want to get a full essay, rescript it on our website: BestEssayCheap.com

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