is viewed as stream of discrete particles or wave packets‚ of energy called Photons where energy is proportional to frequency ( ) E~ f Electromagnetic Radiation • Electric field- responsible for most phenomena (transmission reflection‚ refraction and absorption) • Magnetic field responsible for absorption of RF waves in NMR Wave Properties of EM Radiation • Velocity‚ c = 3.0 × 108 m/s (vacuum) • Wavelength‚ λ characterizes type of radiation‚ units of length (e.g.‚ nm for Vis and
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DEOGRACIAS P. PRINCESA MEMORIAL HIGH SCHOOL Ranao – Ranao‚ Ligao City LONG TEST IN SCIENCE IV (PHYSICS) MULTIPLE CHOICE. Read each item carefully and write the letter of the BEST answer in your answer sheets. 1. What is needed for sound to spread and travel? a. Force b. Medium c. Wires d. Sound wave 2. All of these are media in which sound waves can travel EXCEPT a. Solid b. Liquid c. Gas d. Vacuum 3. Why do people in upland areas speak louder than the normal voice
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1 Applied geophysics – Introduction Techniques and targets Introduction to geophysical methods: Reference: Sharma p1-10 Reynolds p1-27 Applied geophysics – Introduction What do we mean by applied geophysics? 2 Applied geophysics – Introduction Remote sensing Constraining the Earth’s sub-surface with observations at the surface Geophysical techniques measure physical phenomena: • Gravity • Magnetism • Elastic waves • Electricity • Electromagnetic waves Which are sensitive to sub-surface
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JAMES WEBB SPACE TELESCOPE Lachlan Milligan Part 1: Research of an Optical Instrument or Device The James Webb Space Telescope (JWST)‚ named after James Webb who played a pivotal role in the Apollo program‚ is renowned for replacing the Hubble space telescope due its uncontested visibility (HubbleSite‚ 2015)‚ created by modern technology. The JWST cost $8.7 billion US (NASA JWST‚ 2016) and is scheduled to be launched in October 2018 and will offer unparalleled resolution from long-wavelength
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Physics in Everyday Life 1 Just about everything you do from moving to eating to listening to music involves physics. Now that I have really explored them I think it is hard to go about our day and not do something that involves physics. Some of the things I will talk about are getting out of bed‚ the eye and how eye glasses help a person see better‚ speakers‚ the Frisbee‚ sailing‚ and the pulleys I use to get my jeep unstuck in the mud when I ride in the woods. All of these
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BASICS OF LEVELLING USES OF LEVELLING In the context of tidal measurements‚ levelling is used for the following purposes: • Referencing of Tide Gauges: To determine and check the vertical stability of the tide gauge bench mark (TGBM) with respect to reference points (benchmarks) in its immediate vicinity. In order to isolate any local movements‚ there should be at least three such benchmarks‚ and the levelling should be repeated on an annual or semi-annual basis. • Connection
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increase. When looking at distance target‚ the esotropia would decrease. Cover test with glasses‚ there is no manifest strabismus‚ reduced esotropia or orthophoria. Accommodation‚ convergence and the AC/A ratio As I applied cyclopentolate for my refraction‚ this has stop any accommodation/convergence. Therefore‚ I would have to ensure that when the child returns to lift their glasses‚ that I measure the accommodation and convergence. This should be done with/without glasses. A convergence/accommodative
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water in the concave mirror the position of object and image shifts to C’ i.e.‚ now ray starting fromC’ after refraction moves along ED and then DC to make apparent image of centre of curtature. Image Object Needle I I I I I I I I I I I I N / I I I I I I I I. II I I I B Fig. 1 : Refractive index of liquid .. LNDC’ = i (angel of incidence) = LBC’D LMDE = r (angel of refraction) = LBCD sin i = sin r allw In LillC’D‚ sin i = ~BCD sin r = DBIDC’ DC DBIDC DC’ DB DC’ DB DC
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CRUDE OIL HISTORICAL DEVELOPMENT 1990 -‚ The price of crude oil spiked with the lower production during Kuwaiti invasion by Saddam Hussein forces 1994 - The Gulf War to liberate Kuwait‚ crude oil prices declined. In 1994‚ the inflation adjusted oil price reached the lowest level since 1973 The United States economy was strong and the Asian Pacific region was booming which extended into 1997. From 1990 to 1997‚ world oil consumption increased 6.2 million barrels per day. Declining Russian
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Unit 4: Definitions Horizontal cabling: The cabling between and including the outlets and the horizontal cross-connect. Backbone cabling: The cabling that connects between telecommunications rooms and equipment rooms. Patch cords: Any flexible piece of cable that connects one network device to the main cable run or to a patch panel. Connectors: A device attached to the end of a cable‚ receiver‚ or light source that joins to another cable or device. Conduit: A rigid or flexible metallic or nonmetallic
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