visible. The wavelength of a photon and De-Broglie wavelength of an electron have the same value. Show that the energy of the photon is ( 2mcλ ) / h times the kinetic energy of the electron. Q.5. Electrons are emitted from a photosensitive surface when it is illuminated by green light but electron emission does not take place by yellow light. Will the electrons be emitted when the surface is illuminated by (i) red light‚ and (ii) blue light? Q.6. Ultraviolet light of wavelength 2271 A from
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The goal of this experiment was to measure spectroscope position to calculate wavelengths of line emission spectra while also using this data to determine the unknown mixture of the flame emission procedure of the experiment. The original hypothesis was that the spectroscope would show multiple different line emission spectra in which the ΔE would be negative there was an emission of light as the electron’s decreased in electron transitions. This hypothesis was proven correct‚ as well as‚ the unknown
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diffraction grating‚ a hydrogen lamp was observed and emission wavelengths compared with the known wavelength values. Flames from ignited sodium chloride were also observed and wavelengths calculated. To calculate the
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with electro-magnetic radiation (e.g. Light). In this lab‚ we will separate some light sources in to constituent colors and find out the wavelength of some atomic emissions. We will also try to compare the line spectra found from gas discharge tubes and flame emissions. Finally‚ we will measure the absorbance of Copper sulfate solution as a function of wavelength. Experimental Method: We start our experiment by looking through a Spectroscope at the outside sunlight‚ a regular light bulb (incandescent)
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of the light. This occurs the most at the analytical wavelength‚ where the most light is absorbed by the particles. When light of this wavelength hits the particles‚ it is absorbed and there is no chance that it will reach the sensor in the spectrophotometer. However‚ if a solution is analyzed with a wavelength corresponding to the color of the particles‚
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monochromator. The monochromator separates the wavelengths of light and focuses each of them onto the photo detector sequentially. The absorption spectrum is determined to select the optimal wavelength for analyzing the cobalt (II) nitrate. The optimal wavelength for measuring absorbance is that wavelength that is most absorbed by the compound. The Beer’s Law Plot showed and differentiate the proportionality of the Concentration vs Absorbance graph and the Wavelength vs Absorbance graph. The first graph
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1. A single disturbance that moves from point to point through a medium is called a ___. a. period b. periodic wave c. wavelength d. pulse Answer: D A wave is a continuous and repeating disturbance of a medium and a pulse is a single disturbance. 2. If the particles of the medium are vibrating to and fro in the same direction of energy transport‚ then the wave is a ____ wave. a. longitudinal b. sound c. standing d. transverse Answer: A In longitudinal waves‚ particles of the medium
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to beyond 40gb/s. Keywords: Wavelength Division Multiplexing(WDM)‚ Packet switching‚ Router‚ Bandwidth‚ IP network‚ Contention Resolution . I. Introduction Packets are the basic units of Internet data. Currently‚ they are directed to their final destination using electronic routers. These packets are moved from router to router using optical fiber transmission and wavelength division multiplexing (WDM) systems where data is transported over different wavelength (colors) of light that are combined
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method which chemically analyzes the particular wavelength of a sample element to identify and determine the abundance of this certain element. The wavelength of the atomic spectral line unveils the identity of the element while the emitted light intensity is proportional to the number of atoms in the element. The flame test is also a very effective way to identify an individual element. The color of the flame can be described in terms of its wavelength and can be used to identify the element. Energy
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correspond to the wavelengths of light that are absorbed by the chloroplasts in the presence of the differently coloured filters. Questions: 1. What is the independent variable for Part A of the exercise? What is the dependent variable in Part A of this exercise? Independent variable = wavelength Dependent variable = absorbance 2. What is the independent variable for Part B of the exercise? What is the dependent variable in Part B of this exercise? Independent variable = wavelength of light transmitted
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