Effect of aperture on microinterferom eter reading errors
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As theoretical and experimental data show, in interference systems which are realized in accordance with the principle of bands of equal inclination, the aperture of the illuminating beam of the rays does not affect the width of the interference band. Consequently, the introduction of corrections of the form (3) into the MII-4 measurement results is not only superfluous, but also quite objectionable.
In interference systems achieved according to the principle of bands of equal width, the width of the interference band is regularly associated with the aperture of the illuminating beam of the rays. With measurements on instruments of this type (MII-9), it is necessary to introduce the correction in accordance with (3) into the measurement result.
Widening the interference band with an aperture increase, with interference of equal width, permits expressing the assumption that, in the given case, in the region of localization of the interference bands, a superimposition of interference maxima (or minima) takes place, which are caused by the variously directed rays. Thus, a complex interference pattern arises, which requires further theoretical and experimental investigations.
KeywordsExperimental Data Physical Chemistry Analytical Chemistry Eter Experimental Investigation
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