Our strength is our satisfied customers worldwide. Our customers can expect to receive better products each time a purchase order is placed with us. We try improving the quality of our products for every consignment we dispatch. We also undertake contract manufacturing of opto-mechanical products in standard and custom specifications. One of our major activity is in OEM market where we develop and supply low volume opto-mechanical devices & positioning as per custom design. The products described in this website constitute only the standard items we manufacture for research and industrial market. Our location in INDIA enables us to be the most cost effective in this field of activity compared to any other company in the world. Our core competency is in prototype development and low volume production of opto-mechanical devices and systems where skilled labour is the major input. This helps us to have total control of quality in our products and services. We have in-house infrastructure capabilities for all the processes involved in the manufacture of our products. Ours is an organisation dedicated for the design, development and manufacture of optics, opto-mechanics, educational products and positioning devices. The discordance positions are most clearly seen as minima in the contrast of the pattern. As D is increased, the two systems gradually separate and the maximum discordance occurs when the rings of one system are set exactly halfway between those of the other system. The wavelength separation of the Na D-line doublet is easily determined by observing the successive coincidence and discordance of the two sets of fringe systems produced by the doublet of wavelengths (λ 1 and λ 2 with λ 1 > λ 2 ). The interference pattern observed with the sodium lamp contains two sets of fringes which disappear when the bright bands of one set are superimposed on the dark bands of the other. From this we can calculate wavelength of sodium source. The two beams of a Michelson interferometer interfere constructively when the waves add in phase and destructively when they add out of phase, producing circular interference fringes as a result. The purpose of this experiment is to measure the wavelength of Sodium D emission lines. Measurement of these lines, designated as D 1 and D 2 Fraunhofer lines, the average wavelength as well as difference between the two emission lines of sodium can be determined. Sodium has two emission wavelengths that have extremely close values and without sensitive equipment, it cannot be distinguished. In this model of Michelson interferometer, sodium vapor lamp is used as light source.
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