1. i) • Antenna radiation pattern or antenna pattern is defined as “a mathematical function or a graphical representation of the radiation properties of the antenna as a function of space coordinates.” • The radiation pattern is determined in the far-field region and is represented as a function of the directional coordinates. • Radiation properties include power flux density‚ radiation intensity‚ field strength‚ directivity phase or polarization [pic]
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Chapter 1 Introduction to D.R.D.O 1.1 Defence Research and Development Organization DRDO was formed in 1958 from the amalgamation of the already functioning Technical Development Establishment (TDEs) of the Indian Army and the Directorate of Technical Development & Production (DTDP) with the Defense Science Organization (DSO). DRDO is 50 labs strong and is deeply engaged in developing Defense technologies covering disciplines like aeronautics‚ armaments‚ electronics‚ combat vehicles‚ engineering
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be measured electrically. Classification based on property is as given below: Temperature - Thermistors‚ thermocouples‚ RTD’s‚ IC and many more. Pressure - Fibre optic‚ vacuum‚ elastic liquid based manometers‚ LVDT‚ electronic. Flow - Electromagnetic‚ differential pressure‚ positional displacement‚ thermal mass‚ etc. Level Sensors - Differential pressure‚ ultrasonic radio frequency‚ radar‚ thermal displacement‚ etc. Proximity and displacement - LVDT‚ photoelectric‚ capacitive‚ magnetic
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P1 AQA – Revision Notes 1. Heat Transfer • Thermal radiation = infra-red radiation (beyond red part of visible spectrum) • Surface of sun is 5500 degrees. • Greenhouse effect is the idea that the earth is a greenhouse‚ and the atmosphere is glass that stops substances exiting or entering. • DARK‚ MATT SURFACES emit more radiation than shiny‚ light ones‚ and absorb radiation better. • Conduction: free electrons are given energy where heated and diffuse – this energy is passed on as electrons
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Liannys Polanco 02.05 Electron Arrangement and EMR: Line Spectra Lab Worksheet Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Procedure Access the virtual lab and complete the experiments. Part One (Flame Test): Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame Identify each unknown from Part One of the
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nail‚ a leaf falling from a tree‚ or a rocket flying in space. Mechanical energy pulls‚ pushes‚ twists‚ turns and throws. Radiant Energy Visible light is electromagnetic energy emitted at wavelengths our eyes can see. Electromagnetic energy emitted at wavelengths we cannot see may take the form of infrared radiation‚ ultraviolet radiation‚ X-rays‚ gamma rays‚ and radio waves. Gamma rays have wavelengths much shorter than visible light. Radio waves are the opposite. Their frequencies are far
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Topic 4: Oscillations and Waves 10 hours 4.1 Kinematics of simple harmonic motion (SHM) 2 hours | |Assessment statement |Obj |Student Notes | |4.1.1 |Describe examples of oscillations. |2 |A mass hanged with a spring | | | | |A pendulum
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to the frequency of the radiation it represents; an analogous discrete amount of any other physical quantity‚ such as momentum or electric charge. B. Ground State- the lowest energy state of an atom or other particle. C. Excited State- a stationary state of higher energy than the lowest stationary state or ground state of a particle or system of particles. 5. A spectroscope is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum‚ typically used
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Singh‚ Hanumant; Adams‚ Jonathan; Mindell‚ David; and Foley‚ Brendan 2000 Imaging Underwater for Archaeology. Journal of Field Archaeology volume 27 number 3: 319-328. The article by the various authors listed above concentrated on the various techniques that are used to locate and then to excavate these sites. They list and discuss the various techniques that they use. These vary from side-scanning to locate the sites to high resolution video to see how the site appears and the various locations
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------------------------------------------------- Refractive index From Wikipedia‚ the free encyclopedia In optics the refractive index (or index of refraction) n of a substance (optical medium) is a dimensionless number that describes how light‚ or any other radiation‚ propagates through that medium. Its most elementary occurrence (and historically the first one) is in Snell’s law of refraction‚ n1sinθ1= n2sinθ2‚ where θ1 and θ2 are the angles of incidence of a ray crossing the interface between two media with
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