photoelectric effect as well as the theory behind it. To determine h‚ multiple intensities of light were shined upon a cathode/anode apparatus and current and stopping potentials were measured. The weighted mean of the two values determined from different light intensities is (4.141 ± .008924) × 10-15 eV∙s‚ which is within .560σ of the world value of h. The independence of electron kinetic energy and incident light intensity is shown from the experiment. Also included is a brief analysis of the determined
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and tedtalks talk about light behaves as waves and as particles‚ the idea that everything could be light in a concentrated state of motion strikes my curiosity‚ what is light? Defining light as the some of its part doesn’t answer the question.”RESISTANCE” light is resistance‚ the filament resist the current flowing from the positive‚ it’s day when the earth resist the light from the sun‚ thus the definition of light is abstract. when “FlOW” is being block it generates light‚ energy then is “FlOW”
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before the theory of electromagnetism was developed‚ optical phenomena were studied‚ characterized‚ and used as probes of nature. Since the invention of the laser a half-century ago‚ this tool has become the preeminent source for all studies involving light. It too has revolutionized countless areas of high technology including telecommunications‚ data storage‚ semiconductor manufacturing‚ healthcare technology‚
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Heart of Darkness Essay Light and dark imagery is one element most commonly used in literature‚ and has held specific symbolic meanings for hundreds of years. Simply stated‚ light generally symbolizes good‚ while darkness symbolizes the complete opposite‚ evil. More specifically‚ Conrad uses detailed imagery of light and dark to show that white men can in fact be more savage than the natives. While the contrast of light and dark‚ white and black‚ and good and evil is a common theme in his novel
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everyday products. For example‚ the light omitted by fireflies‚ deep sea fish and glow sticks is a result of this process. Luminol was synthesized from 3-nitrophthalic acid and then combined with potassium hexacyanoferrate(III) and hydrogen peroxide to omit a blue light. The product of this reaction is very unstable and is made by losing nitrogen and the electrons go from an excited state to ground state and the energy is emitted as a photon creating the blue light. After synthesizing the luminol‚ the
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distance between the vertical plane containing the sun and the plane of the meridian. 6.---------A single opaque or translucent element to shield a source from direct view at certain angles or to absorb unwanted light. 7.---------Device used with electric discharge lamp to obtain the necessary circuit conditions for starting the operating. 8.---------Popular term for ultraviolet energy near the visible spectrum. 9.---------The terms Brightness
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cables are short distance‚ usually have connectors preinstalled on both ends‚ are used to connect equipment‚ and are generally between 3 and 6 meters long. Connectors- With respect to cabling‚ a device attached to the end of a cable‚ receiver‚ or light source that joins it with another cable‚ device or fiber. A connector is a mechanical device used to align and join two conductors or fibers together to provide a means for attaching and decoupling it to a transmitter‚ receiver‚ or another fiber. Commonly
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energy decreases. As wavelength decreases of a photon‚ frequency increases and energy increases. Photoelectric effect Shining light on a metal causes electrons to be emitted Below some frequency‚ no photons are emitted regardless of intensity of light. As frequency of the light increases‚ the kinetic energy of the emitted electrons increase. As the intensity of the light increases under a certain frequency‚ the number of the electrons ( current I) increases. Photon energy is quantized. Some
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to Rayleigh scattering. As light moves through the atmosphere‚ most of the longer wavelengths pass straight through. Little of the red‚ orange and yellow light is affected by the air. However‚ much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look‚ some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead‚ the
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significance of moments when light and dark imagery are brought to the fore. Light is a motif encountered in The Bell Jar and Thérèse Raquin‚ used to illuminate true human nature. In The Bell Jar‚ Sylvia Plath’s use of mirrors conveys Esther dissociated identities; the mirror is a reminder of her inability to understand herself‚ and presents the difference between her inner self and the person she exhibits to the outer world. Similarly‚ Emile Zola uses light in Thérèse Raquin to reveal Laurent
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