Practical Optics for the Laboratory And Workshop
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In our eReader you can find the full English version of the book. Read Practical Optics for the Laboratory And Workshop Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Practical Optics for the Laboratory And Workshop
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Fig. 70 shows a three-legged spherometer, and, as will be seen, it consists of a small tripod, in the centre of which is mounted a very finely pitched micrometer screw with ? divided disc attached to it. This divided disc reads L-tennediate values of divisions of the vertical scale T? 81 82 PRACTICAL OPTICS shown in the figure on one of the legs. When using the instrument, it must first be placed on a flat surface (such as an optical " flat "), and the micrometer screw moved Vertical Scale Circ...ular Divided PJate Micrometer Screw V FIG. 70.
up or down until all four " feet " are exactly in contact with the surface at the same moment ; the reading on the scale and divided disc should then be taken ; this should be the zero of the instrument. After this, place the in- strument on the surface whose radius is required, and again move the micrometer screw up or down according as the surface is convex or concave and take a second reading. (All readings should be a mean value of a number of settings.
What to read after Practical Optics for the Laboratory And Workshop?
You can find similar books in the "Read Also" column, or choose other free books by B K Benjamin King Johnson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Fig. 70 shows a three-legged spherometer, and, as will be seen, it consists of a small tripod, in the centre of which is mounted a very finely pitched micrometer screw with ? divided disc attached to it. This divided disc reads L-tennediate values of divisions of the vertical scale T? 81 82 PRACTICAL OPTICS shown in the figure on one of the legs. When using the instrument, it must first be placed on a flat surface (such as an optical " flat "), and the micrometer screw moved Vertical Scale Circ...ular Divided PJate Micrometer Screw V FIG. 70.
up or down until all four " feet " are exactly in contact with the surface at the same moment ; the reading on the scale and divided disc should then be taken ; this should be the zero of the instrument. After this, place the in- strument on the surface whose radius is required, and again move the micrometer screw up or down according as the surface is convex or concave and take a second reading. (All readings should be a mean value of a number of settings.
What to read after Practical Optics for the Laboratory And Workshop?
You can find similar books in the "Read Also" column, or choose other free books by B K Benjamin King Johnson to read onlineMoreLess
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