stivali ugg Double-surface interferometry fringe i

Double-surface interferometry fringe interpretation and matching fluid

Poor interpretation of the interferogram by the corresponding number of interference fringes between two points is given in the figure through the interpretation of interference occur within the maximum effective range of the number of interference fringes, we can get the biggest piece of the measured optical inhomogeneity According to the interferogram we can interpret the direction of the refractive index changes. If the container is not a relatively small piece guillotine,[link widoczny dla zalogowanych], then the edge of the interferogram will be the wall surface and the effects. Since oily liquid metal mercury, the wall of the role and the role of the wall with the metal, making the upper and lower surface of sub g waves were four or convex, as shown in Figure 1. The match between the two liquid solution, we can be equivalent to levels seen on the concave-shaped cross section e stiffness direction), shown in Figure 2. Therefore, in the normal incidence of parallel light in the circle 2 in Figure 3, its edges should correspond to a set of equal thickness interference bar cutter, but because of the uneven nature of the device under test impact, we Gar interference from the interference bar chart pattern shown in Figure 3, the edges were bent shape. We are under the interference fringe to the edge part of the curved shape of the refractive index changes in the direction of interpretation. Can be shown that the refractive index by eight pieces of curved interference fringes along the direction of delivery of said armor count eyelashes share with, r1091. № 6 (H] Second, the matching liquid preparation method I. the role and the role of a role in matching liquid is to reduce the measured surface of the processing requirements. In the test of common glass optical homogeneity in the square-ho, on the DUT surface finish requirements are high, the general requirements of the order of the wavelength, and interference with double-surface method can greatly reduce the processing requirements of the surface of the device under test. interferometry with double-surface inspection of glass optical homogeneity of the basic formula is in [ ,],[Speed processing of parts when testing is not required. But in fact, a n) can not be strictly zero,[link widoczny dla zalogowanych], and only as small as possible so that [1] in equation (3) is much smaller than the left side of the second to first. Therefore, matching the refractive index n-dimensional pieces of blanket close to the measured refractive index, the more processing may relax the requirements on the DUT. According to the literature [1] Chinese (3) can be estimated as follows: When the match tuck accuracy, that is, (-n) when the precision of 1O on lO1) mm thick test pieces, the accuracy of 1O subject the △ I, do not be measuring surface defects can be relaxed to 0.1nlli1, namely, coarse surface can be measured. Another role is to match the solution matches the intensity of coherent light. I used to be tied by the mercury surface as the next, the resistance reflected by the light intensity under the surface than the reflected light on the surface many of the powerful, making the contrast of interference fringes greatly reduced, is not conducive to recording and interpretation, so the actual test reflected the need for the two liquid to match the intensity, the matching method is: do not change the premise of the refractive index matching liquid,[link widoczny dla zalogowanych], will add a little color matching liquid oil and stir well to increase the matching liquid on the surface in the absorption of reflected light intensity to achieve the two coherent light reflecting surface light intensity match. 2. Matching liquid preparation method of the refractive index of glass is generally about 1.5, while the oil of refractive index 1.4 to 1.5, so it can be tested before the election of a refractive index close to the refractive index of the oil as the main glass composition, then with high refractive index liquid (such as brominated naphthalene) mixed into a uniform matching fluid. Abhe refractometer with an accuracy can be measured one, on this basis, it can be directly observed with the eye on the match Harmony continued guillotine On the edge of disappearing in the situation. According to Fresenl formula [\high precision matching liquid. References [1], Zhao straight bamboo Bodhisattva, surface interferometry with double glass discretionary optical homogeneity test,[link widoczny dla zalogowanych], \the optical principle U: List), Science Press (1978 edition),[link widoczny dla zalogowanych], P emu. electron beam absorbed dose water calorimeter Shi Keqin cassette '(Beijing Measurement Science Abstract meal of the day on this boat Shao rejection developed electron beam radiation processing Warm water calorimeter cassette received a dose of Feng calorimeter energy down in the - down. MeV electron accelerator for industrial applications, the total measurement uncertainty 4.O (95% confidence deer). one principle bearing in mind the structure received doses of electronic chatter box Cambodian water calorimeter (hereinafter referred to as the calorimeter) of warm distilled water collection is made of polystyrene Petri dishes filled with four components. dish built there in the past the glass edge seal standard pulp thermal l resistance as the temperature sensing element, and and the digital voltmeter (O55) connection form ho wet system. absorber with polystyrene foam brand-hexene: insulation for thermal insulation. calorimeter and foot brick Leopard diagram shown in Figure i, Figure 2 the bearing. calorimeter indicate strong field}

相关的主题文章：

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

The post has been approved 0 times