Model of atom discribed by ruther fold in 1911 Types of radiation ~radiation is a form of energy carried by waves of stream of particles emissions n propagation of energy ~radiation devided in to two ~none ionizing radiation its not capable of ionizing atom ~ionaizing radiation is capable of ionizing atom n its very energetic eg x ray It classified in to two *# particulate radiation it transporter Of energy from radiation carried by particles such as beta particle Cathode rays Alpha particle Proton Neutron *# em radiation. Its positive ionizing n non ionizing type it transport energy through space or matter PROPERTIES OF EM radiation ~it composed of transverce vaibration ~the vibration ve wide range of wavee length n frequency ~they travel in a straight line PRODUCTION N PROPERTIES X RAYS ~x ray has two terminals *#anode *#cathode Anode its classified in to two # stationary anod tube # rotary anod tube ~in stationary we transfer heat mechanism by conduction ~housing used for protection n for shielding ~envelop used for to hold or protect the anod n cathode ~rotery anod is common type n it ve ability to produce highr intensity of x rays ~x ray tube consists of two main components ~ THE INSERT THE SHEILD/housing ~the insert envelope consistes of the cathode n anode tube in it ~the shield it used to protect the patient n the radiographer from the electrical n radiation hazards *# rotating anod made from rheenium it has high atomic no melting point similar to tungston *#TUNGSTON has high atomic no /z=74/ so its an efficient producer of x ray ~~ theeir r 2 types of x rays # the caracterstic x ray #brhumsterlung x ray V ....Speed J.....distance T .....time C.....speed A.....amplitude T......period F......frequency h....wave length The si unit of energy joules The si unit of power watt The si unit of voltage volt The si unit of current amp The si unit of temperature kelvin The si unit of magnetic flux weber The si unit of flux density is esla ~transduter it converts electro magnetic force to the sound wave ~oddeble sound the ear can heat ~infrasound the ear can not hear ~the infra sound are leessthan 20 hz ~ultrasound is aree greater than 20 hz ~volt meters is a divice used to measure amout of volt ~ammeters is a current measurement device ~ohmeter is a mesurnment of resistance ~resister a device that helps to convert electric energy to heeat energy ~fuse control the amount of power
Posted on: Sat, 07 Sep 2013 08:45:52 +0000
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