PPT-Radiation

Biology Rad T 290 Objectives Radiation Biology Radiosensitivity Somatic Effects Embryonic and Fetal Risks Genetic Effects Patient Interactions Photoelectric Classic Coherent Scatter. internal emitter iodine radium strontium tritium cesium absorbed dose rate kg MeV MeV brPage 4br Health effects depend on how radiation interacts w th bio ogical material at the microscopic level Radiation delivers energy in small pa ckets not unifo Directed Readings . In the Classroom. May/June 2013 issue . of . Radiologic . Technology. Instructions:. This presentation provides a framework for educators and students to use Directed Reading content published in . . Emission and Absorption . Take away concepts. Conservation of energy. . Black body radiation principle. Emission wavelength and temperature (Wien’s Law). . Radiation vs. distance relation . Black body energy flux (Stefan-Boltzmann Law) . Quantities. and . units. in radiation dosimetry. Marco SILARI, . CERN. 1. th. Annual ARDENT Workshop, Vienna, 20-23 November 2012. 1895. D. iscovery . of X rays. Wilhelm . C. . Röntgen. . . 1897 . Transfer of Energy as Heat. Energy moves as heat in three ways. Heat is always a transfer of energy from objects at a higher temperature to a lower temperature. There are 3 different ways this transfer of energy can happen. http://www.pi.hitachi.co.jp/rd-eng/product/industrial-sys/accelerator-sys/proton-therapy-sys/proton-beam-therapy/index.html. http://. www.uos.harvard.edu/ehs/radiation/how_dosimeter.shtml. http://www.upmccancercenters.com/cancer/prostate/radbratherapy.html. Nazi Homayounnasab. Expert of radio monitoring. Scope. Mobile phone use all around the world has risen dramatically over the last 20 . years. P. eople . increasingly rely on mobile phones as their sole or primary means of telephone . Heat Transfer. E. nergy always moves when it is near something that has less energy(Heat is energy). EXAMPLE: Hot . objects in a cooler room will cool to room . temperature, and cold . objects in a warmer room will heat up to room temperature.. Neal Boseman, Vessen Hopkins, and Sarah Moorman. Topics of Discussion:. What is Blackbody Radiation?. History of Blackbody Radiation. How has this discovery impacted Modern Physics?. Applications of Blackbody Radiation. transmitted. absorbed. reflected. 1. transmission. Radiation passes through atmosphere unimpeded.. Shortwave and longwave “windows” . 2. absorption. Energy is transferred to absorber; absorber emits energy. What type of radiation is most harmful It depends on whether your exposure to radiation is internal or external beta particles Radioactive materials thatRadiation can affect the bodyThese adverse hea What are they? . exposure … contamination. Are they the same?. Radioactivity. Spontaneous emission of radiation from the nucleus of an unstable isotope. Disintegration Decay. Demonstrate Decontamination. Radiation refers to the process that is concerned with the passage of energy between places through space. . It is the radiation generated by sun that . regulates the temperature of earth. . . CLASSIFICATION OF RADIATION: ionizing or non-ionizing types. . . Radiation is the emission of energy in the form of waves or particles. Radiation that is so powerful that it can remove electrons from atoms is called ionizing.. Examples of types of ionizing radiation are x-rays from medical machines and gamma rays from radioactive substances. .