Radiation

RADIOACTIVITY of import is blocked by make-up. Its positively aerated. Its touched 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 beta 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. nearly isotopes are unstable i.e effect break into smaller split to release of import, of import, and Gamma rays, a process called radioactive decay. fractional(prenominal) life is a time taken for one-half the atoms to decay.

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 spark to become Astatine (At) 218 Po 218 At + 0 e 84 85 -1 Gamma emission 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 escape t! o plants and then traced through the plant using a Geiger counter. This order acting is employ to develop better fertilisers. 2. It can be utilise to detect conditions of internal body organs deal kidneys. 3. It is used to detect leaks from a pipeline carrying oil or gas. This saves take away time. 4. Sterilising. Gamma-rays can be used to despatch bacteria, mould and insects in foods, even after the food has been packaged. This prolongs the shelf-life of the food. 5. weightiness 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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