hello ben how do u memorize this:
Applications of radio-isotopes
The radio-isotopes have wide applications in medicine,agriculture, industry and research. A radio-isotope is added to a particular system and the course of the isotope is studied to understand the system.
(i) Medical applications
In medical field, radio-isotopes are used both in diagnosis and therapy. Radio cobalt (Co60) emitting γ−rays is used in the treatment of cancer. Gamma rays destroy cancer cells to a greater extent. Radio-sodium (Na24) is used to detect the presence of blocks in blood vessels, to check the effective functioning of heart in pumping blood and maintaining circulation. Radio-iodine (I131) is used in the detection of the nature of thyroid gland and also for treatment. Radio iodine is also used to locate brain tumours.Radio-iron (Fe59) is used to diagnose anaemia. An anaemic patient retains iron in the blood longer than normal patient. Radio-phosphorous (P32) is used in the treatment of skin diseases.
(ii) Agriculture
In agriculture, radio-isotopes help to increase the crop yields.Radio-phosphorous (P32) incorporated with phosphate fertilizer is added to the soil. The plant and soil are tested from time to time.Phosphorous is taken by the plant for its growth and radio-phosphorous is found to increase the yield.Sprouting and spoilage of onions, potatoes, grams etc. are prevented by exposure to a very small amount of radiation. Certain perishable cereals remain fresh beyond their normal life span when exposed to radiation.
(iii) Industry
In Industry, the lubricating oil containing radio-isotopes is used to study the wear and tear of the machinery.
(iv) Molecular biology
In molecular biology radio-isotopes are used in sterilising pharmaceutical and surgical instruments.
sorry for being too long but this physics i too hard to memorize.i understood but i have trouble to memorize it.please explain me any method to memorize this.