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    Properties of Light

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    Danielle Silverstein PHY 101 Section 10497 March 4‚ 2013 Light up this World Purpose: In this lab experiment‚ LED lights will be used to show how when E&M radiation is absorbed‚ the energy is converted to heat. A drop of isopropyl alcohol will absorb light energy of different colors‚ and the evaporation rate of the alcohol will be measured. The key to this lab is the evaporation rate is directly related to the energy of the light shining on the drop. Materials: * * LEDs

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    Cell Phone Radiation

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    research has concluded that mobile phones do produce RF energy and emit electromagnetic radiation. Studies have also concluded that high levels of RF energy can be harmful to human health. However‚ all scientific studies have not agreed if the levels of RF energy emitted from modern cell phones is harmful. The biggest concern with prolonged use of cell phones is the human body’s absorption of electromagnetic radiation. Electromagnetic radiation consists of waves of electric and magnetic energy moving

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    Radioactive Emissions

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    emissions are electromagnetic radiations which occur due to the spontaneous disintegration of unstable nuclei. Natural elements with atomic number greater than 83 and isotopes of some lighter elements are found to be radioactive. They are categorized as alpha‚ beta and gamma radiations. Alpha particles are positively charged helium-4 nuclei ‚ beta particles are high energy-high speed electrons while gamma rays unlike alpha and beta radiation have no mass and charge and are short electromagnetic waves consisting

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    Huygens ( Holland) - Wave theory of light  4. Issac Newton (UK) - Universal law of gravitation; law of motion; Reflecting telescope  5. Michael Faraday (UK) - Law of electromagnetic induction  6. James Clerk Maxwell (UK) - Electro magnetic theory;Light-an electromagnetic wave  7. Heinrich Rudolf Hertz (Germany) - Generation of electromagnetic waves  8. J.C.Bose (India) - Ultra short radio waves  9. W.K.Roentgen (Germany) - X-rays  10. J.J.Thomson (U.K) - Electron  11. Marie Sklodowska Curie (Poland) -

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    Lens Antenna  an antenna whose directivity pattern is a result of the difference between the phase velocity of propagation of an electromagnetic wave in air and that in the lens material. Lens antennas are used in radar and metering equipment that operates in the centimeter wavelength range. A lens antenna consists of a lens proper and of a feed. The shape of the lens depends on the refractive index n (the ratio of the phase velocity of propagation of a radio wave in a vacuum to that in the lens)

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    The Cosmic Engine Our sun is just one galaxy star in the galaxy and ours is just one galaxy in the Universe Outline the historical development of models of the Universe from the time of Aristotle to the time of Newton Aristotle (approx. 350 BC) His theory proposed: * Earth was round‚ rather than flat * Earth was the centre of the Universe and that the Sun‚ the Moon‚ and other visible planets‚ as well as a celestial sphere containing all the stars‚ revolved around the Earth‚ this model

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    Partition Of Bengal

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    PARTITION OF BENGAL -Anandita Lidhoo‚ 10th ICSE‚ Sreenidhi International School 2015 CONTENTS 1. Introduction 2. Lord Curzon 3. Reasons behind the partition 4. The anti-partition movement 5. Boycott and Swadeshi movements 6. Reaction of the British government 7. Impact of the boycott and Swadeshi movements 8. Conclusion 9. Bibliography INTRODUCTION The decision to affect the Partition of Bengal was announced in July 1905 by the Viceroy of India‚ Lord Curzon

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    Emwaves

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    very dangerous situation for an agriculture based country like india. We hope these findings throw some light on the grave situation and let people think about the alternates. Electromagnetic waves or radiation [pic] The electromagnetic waves that compose electromagnetic radiation can be imagined as a self-propagating transverse oscillating wave of electric and magnetic fields. This diagram shows a plane linearly polarized EMR wave propagating from left to right. The electric

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    References: Bose‚ Sudhindra. Some aspects of British rule in India‚. Iowa City: The University‚ 1916. Embree‚ Ainslie Thomas Eraly‚ Abraham. India. New York‚ N.Y.: DK Pub.‚ 2008. Mahajan‚ Vidya Dhar‚ and Savitri Mahajan Thompson‚ Edward John‚ and G. T. Garratt. Rise and fulfillment of British rule in India‚. London: Macmillan and Co.‚ 1934. -------------------------------------------- [ 1 ]. Bose‚ Sudhindra. Some aspects of British rule in India‚. Iowa

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    Advancements in Technology

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    Advancements of Technology Charles Gathright COM172 June 03‚ 2014 Deborah Voyt‚ PHD Advancements of Technology Technology has changed the world as we know it. Through many decades of research and inventions the world has transformed from what used to be simple mechanics to complex engineering in functionality. Many people often argue the fact of whether it is good or bad. How has the advancements of technology affected the world today? Technology has made life easier for us by way of communication

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