# wavelength of sodium light using diffraction grating

Apparatus : Diffraction grating, Spectrometer , Source of monochromatic sodium light, prism etc. (6.3.2) and (6.3.3)) increases N 2 times in comparison with one slit, and the maxima width decreases by 1/N.The condition of the main maximum (6.3.4) is of primary importance. The main point of sodium is that,it has high end emission wavelengths values. Thus, a diffraction grating becomes a multitude for the source with parallel slit, when light falls upon it. The lamp using Sodium vapor is used widely as a light source in experiments related to diffraction grating. REPORT: With the information that the sodium yellow light has a wavelength of 589.3 nm, calculate the CAUTION: The diffraction grating is a photographic reproduction and should NOT be touched. The incandescent lamp emits light … measurement of the wave length of sodium light using a diffraction grating Montather Al-baldawi. It shows that for a given diffraction grating (at fixed b), a different wavelength gives maxima at different points of the spectrum. They are: 1 = 588.995 nm 2 = 589.592 nm These would easily be differentiated on a diffraction grating. 2) Graphically verify the wavelength of the laser light using the data collected from the interference pattern produced when the light passes through a diffraction grating. The diffraction phenomena has been treated in the post Light as a Wave : Slit Diffraction. The transmission grating exercise asks you to diffract light through a transmissivegrating, but this time you will use the laser light with a known frequency to determine the line spacing of your diffraction grating. When used with light of a certain wavelength, a third-order maximum is formed at an angle of 16.3°. In this topic, a student will learn the diffraction grating formula with examples. Fix the grating on the table of the spectrometer. From the data of procedure (4), again determine the wavelength of the bright green Using the angle calcualted in Q6 and the. Get the knowledge you need in order to pass your classes and more. I presume that you mean that the the measured wavelength is 150% of the expected value. multiple-slit grating (a diffraction grating). A number of methods can be adopted to measure the separated wavelength components. The angle of of diffraction is of order λ / d with λ the wavelength and d the dimension of the aperture. Determining wavelength using the Diffraction Grating-:|Procedure|:-1. Using 0 as obtained above and the value of the grating spacing obtained from the number of nrlings per mm stated on the grating (it should be about 600 rulings/mm), use equation (l) to determine the wavelengths of each of the lines observed in the rnercury spectnrm. To measure the wavelengths of certain lines in the spectrum of the mercury arc lamp. THEORY. In theory, they function much the same as two slit apertures (see Experiment 9). The intensity of the diffraction maxima (eq. Come browse our large digital warehouse of free sample essays. To determine the grating space of a plane transmission grating and to use this information to measure wavelengths of spectral lines. By using closely spaced slits, the light Is diffracted to large angles, and measurements can be made more accurately. The spectrometer apparatus takes advantage of the fact that the wavelength ( $$\lambda$$) of Sodium light is diffracted from a straight path by the small openings in the diffraction grating, and the relationship between the size of the grating, the wavelength of light, and the angle of diffraction follows a known equation. The tracks on a CD are like the slits on a diffraction grating. The theory of light diffraction from a grating is a very well explained phenomenon in every book of general Physics 1,2.. Q7 Use the equation λ = “The diffraction grating is a useful device for analyzing light sources. x 2 h This is the angle of of the first order diffraction of red light by the CD acting as a reflection diffraction grating. The first order diffraction pattern appears on either side. For monochromatic it will be only dark and bright. Mount the diffraction grating holder on the prism/grating table and put the diffraction grating in place. In this diffraction grating experiment you will observe a pattern of diffracted light. Experiment8. The deeper recess in the holder is intended to protect it from damage. The angle of emergence, theta (), for a wavelength is given by d sin ()= n () It consists of a large number of equally spaced parallel slits.” Its working principle is based on the phenomenon of diffraction.The space between lines acts as slits and these slits diffract the light waves thereby producing a large number of beams that interfere in such a way to produce spectra. 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