Murakami 10D SHOULD WE USE ELECTROMAGNETIC WAVES FOR MEDICAL PURPOSES? In terms of definition‚ Electromagnetic Wave is a “non-particulate radiation (radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge)”. Thus‚ in simpler words‚ electromagnetic is a transmission of energy‚ caused by the oscillation and of electric and magnetic fields. The word electromagnetic wave or electromagnetic radiation may sound complex
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Electromagnetic Waves Although you might not know it you’re constantly surrounded by thousands of electromagnetic waves every day. Sunlight and x-rays are only two types of electromagnetic waves‚ other types are: radio wave‚ infrared rays‚ ultra-violet rays and gamma rays Nature of an electromagnetic wave Electric and magnetic fields are not made up of matter. An electromagnetic wave consists of an electric and magnetic field and doesn’t need a medium to exist. They are the regions through
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Enquiry Study(IES) on the “Impacts of Korean Wave Stars on the Personal Development of Teenagers in Hong Kong”. Therefore‚ I would like to ask that you please help me fill out this questionnaire on the topic. All information obtained is for the enquiry’s purpose and will remain confidential. Thank you. Personal Information Sex: [] Female [] Male Age: [] 11-13 [] 14-16 [] 17-19 Part A 1. Do you describe yourself as a fan of Korean wave stars? [] Yes (go to question 2)
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WAVES OF MIGRATION 1. The Negritos * first people to come to the Philippines * also called Atis or Aetas * They came across land bridges from mainland Asia about 25‚000 years ago. * Philippines then‚ was connected to Asia by land bridges which later sank below the sea * very small people‚ less than 5 feet tall * Were called "Negritos" because they had black skin‚ short kinky hair‚ thick lips‚ and black noses. * they wore little
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my chair out of his office‚ and headed for the boardwalk. The sun is setting; the ocean waves are crashing against the shore pounded with the rhythm of my beating heart. Spending the rest of my life in a wheelchair meant giving up the things I love‚ no dancing‚ no high heels‚ no hiking‚ no beach-combing. As I watched as the waves rose up‚ curled‚ then crashed; drew back into the sea. With each crash‚ the waves seemed to pull a piece of my life out to sea‚ saying‚ no more. . . no more. ... I couldn’t
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Electromagnetic waves in space See the book “Optics” by Hecht sections 3.2 and 3.3 Speed of light: EM waves travel in a vacuum with speed c = c = 299‚792‚458 ms-1 exactly They are transverse waves with (vector) E and B field orthogonal to each other‚ for this section bold indicates vector quanties. When far from the source (many wavelengths) the E and B fields are in phase The vector E x B points in the direction of motion Travelling waves can be written as E = E 0 ⋅ ei ( kx −ωt ) and B = B 0 ⋅ ei
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seven different waves. The waves are in the order of how big the wavelength is and its frequency‚ from the biggest to the smallest: Radio waves‚ Micro waves‚ Infrared‚ Visible light‚ Ultra Violet‚ X-rays and Gamma rays. Each of them has their own special use in everyday life. For example‚ to turn on a TV you need to use Radio waves‚ to heat your food you use Microwaves and X-rays are used to look into people’s bodies. Some waves‚ like Radio waves can be as big as a building or waves like Gamma rays
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of an electronic wave packet in the unifonn field in the interelectrode space of the vacuum photodetector is investigated. It is shown that the dimensions of such a packet must be of an order or more then one micron. It is shown that such localized charges can give rise to abrupt pulses of the current in the external circuit of the photodetector. The determination ofparameters of such packet by powerful laser pulse scattered with is discussed. The motion of one-electron wave packet in the nonuniform
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Abstract: The interferometer is the most accurate measuring device known to man. It was created by Albert A. Michelson. The operation of the interferometer described briefly is a light beam that is separated by a beam splitter. The two beams then travel equal distances at 90° of each other where they are reflected off two mirrors back through the beam splitter. They are then superimposed on to a screen. The screen will display an interference pattern of fringes. The interferometer
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Journal of International Council on Electrical Engineering Vol. 1‚ No. 1‚ pp. 7~13‚ 2011 7 Single-tuned Passive Harmonic Filter Design Considering Variances of Tuning and Quality Factor Young-Sik Cho* and Hanju Cha† Abstract - This paper presents how to select tuning factor and quality factor in designing of a single-tuned passive harmonic filter. Tuning factor and quality factor must be considered before a decision of filter parameters(R‚ L and C). In literature‚ the study about these
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