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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There are several things in science that are really misunderstood‚ like vaccines‚ microwaves‚ and GMOs. But one that is really misunderstood is radiation. First‚ what is radiation? When people talk about radiation or radioactivity‚ they usually talk about microwaves (which don’t cause cancer)‚ X-rays‚ a green thing that glows in the dark‚ the Incredible Hulk‚ or the song by Imagine Dragons. The actual definition is the emission of high energy particles or waves. This can mean many things‚ but the
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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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Chapter 1 Introduction According to Bushong (2009)‚ radiation is an energy that moves through space or matter at a very high speed. This energy can be in the form of particles‚ such as alpha or beta particles‚ which are emitted from radioactive materials‚ or waves such as light‚ heat‚ radiowaves‚ microwaves‚ x-rays and gamma rays. He also mentioned that radioactive materials which is also known as radionuclides or radioisotopes are atoms that are unstable. So‚ there is a tendency for unstable atoms
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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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effects on human health and control of air pollution‚ indoor air pollution‚ noise pollution; • describe water pollution‚ its causes and control; • describe thermal pollution; • describe soil pollution‚ its causes and control; • describe radiation pollution‚ sources and hazards. 10.1 POLLUTION AND POLLUTANTS Human activities directly or indirectly affect the environment adversely. A stone crusher adds a lot of suspended particulate matter and noise into the atmosphere. Automobiles emit from
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