early it has been detected. One method of treatment for cancer is Radiation therapy (Radiotherapy). This is the medical use of ionizing radiation to control or kill these malignant cells. However‚ there is doubt among society about the use of radiotherapy. This is mainly because some long-term side effects include the growth of scar tissue‚ infertility and damage to other areas of the body‚ depending on the location of the radiation treatment. Another major reason for doubting this treatment is because
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The Effect of Nuclear Energy on Human * As we all know‚ nuclear energy is a non-renewable energy. The science of atomic radiation‚ atomic change and nuclear fission was developed from 1895 to 1945‚ much of it in the last six of those years (WMA‚ 2010). Since then human have begun expanding their research on nuclear energy and sadly during year 1939 to year 1949‚ nuclear energy was only used for creating atomic bomb by many of the countries back then such as Japan‚ Germany‚ United States of
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Absorption & Emission of Light Stimulated Absorption & Emission‚ Spontaneous Emission E2 Incident radiation hν hν Emitted & transmitted radiation E1 Resonance condition E2-E1=hν • Rate of stimulated emission is: −dN1/dt = N1B1->2 ρ(ν) • Rate of absorption is the sum of the rated due to stimulated emission and spontaneous emission: −dN2/dt = N2B2->1 ρ(ν) + N2A2->1 where B1->2 is the Einstein transition probability for induced absorption‚ B2->1 is the Einstein transition probability
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PHY 114: Absorption of Nuclear Radiation Abstract: The purpose of this experiment was to determine the mass thickness attenuation factor for beta rays when they pass through polyethylene sheets of varying thicknesses. This was done by using an apparatus that measured the seven different intensities and then taking these values‚ putting them through a number of calculations and finally generating a graph of ln(I_corr) versus the thickness of the polyethylene sheets. Once this graph
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Chapter II Light and Matter The Inner Workings of the Cosmos 2.4 The Distribution of Radiation All microscopic objects – fires‚ cubes‚ people‚ and stars – emit radiation at all times. They radiate because the microscopic charged particles in them are in constant random motion‚ and whenever charges change their state of motion‚ electromagnetic radiation is emitted. The temperature of an object is a direct measure of the amount of microscopic motion within it. The hotter the object
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interconnecting wires are inconvenient‚ hazardous‚ or impossible. The most common form of wireless power transmission is carried out using direct induction followed by resonant magnetic induction. Other methods under consideration include electromagnetic radiation in the form of microwaves or lasers. Energy transfer and efficiency The general principle is that if a given oscillating amount of energy (for example alternating current from a wall outlet) is placed into a primary coil which is capacitively
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refraction and diffraction. 3. They are transverse waves. 4. They travel due to moving electric and magnetic fields. The Sun and other stars give off a wide range of types of electromagnetic waves‚ which travel through space to Earth. Much of this radiation is stopped by Earth’s atmosphere and can only be detected by satellites in orbit outside the atmosphere. Electromagnetic Waves consist of oscillating electric and magnetic fields which can travel through a vacuum while all other type of waves need
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What is electromagnetic radiation? Electromagnetic energy is a term used to describe all the different kinds of energies released into space by stars such as the Sun. These kinds of energies include some that you will recognize and some that will sound strange. They include: * Radio Waves * TV waves * Radar waves * Heat (infrared radiation) * Light * Ultraviolet Light (This is what causes Sunburns) * X-rays (Just like the kind you get at the doctor’s office) * Short waves
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scientists give a bunch of types of radiation when they want to talk about them as a group. Radiation is energy that travels and spreads out as it goes‚ visible that comes from a lamp in your house and radio waves that come from a radio station are two types of electromagnetic radiation. Other examples of EM radiation are microwaves‚ infrared and ultraviolet light‚ X-rays and gamma-rays. Hotter‚ more energetic objects and events create higher energy radiation than cool objects. Only extremely hot
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Radiography is the most familiar type of radiation technique and it uses electromagnetic radiation instead of visible light and this type uses the smallest amount of radiation. Electromagnetic radiation is produced when charged particles of sufficient energy hit a material. Computerized Tomography commonly known as a CT scan‚ during this procedure the patient ties on the table and enters a ring-shaped scanner and this type uses the highest dose of radiation because so many images are taken at once
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