| Reference Type | Journal (article/letter/editorial) |
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| Title | A new incident illuminator for polarizing microscopes |
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| Journal | Mineralogical Magazine and Journal of the Mineralogical Society |
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| Authors | Smith, F. H. | Author |
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| Year | 1964 (March) | Volume | 33 |
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| Issue | 264 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_33/33-264-725.pdf+ |
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| DOI | doi:10.1180/minmag.1964.033.264.01Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 5778 | Long-form Identifier | mindat:1:5:5778:7 |
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| GUID | 0 |
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| Full Reference | Smith, F. H. (1964) A new incident illuminator for polarizing microscopes. Mineralogical Magazine and Journal of the Mineralogical Society, 33 (264) 725-729 doi:10.1180/minmag.1964.033.264.01 |
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| Plain Text | Smith, F. H. (1964) A new incident illuminator for polarizing microscopes. Mineralogical Magazine and Journal of the Mineralogical Society, 33 (264) 725-729 doi:10.1180/minmag.1964.033.264.01 |
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| In | (1962) Mineralogical Magazine Vol. 33 (264) Mineralogical Society |
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| Abstract/Notes | SummaryThe customary illumination by a ‘coverglass’ inclined at 45 degrees is replaced by a double reflection. The beam from the horizontal collimating tube is first reflected from a highly reflecting mirror at the back of the unit, then downward from a coverglass placed at the top of the unit. With this arrangement the coverglass is inclined at less than 22½ degrees to the axis of the microscope, with a similar reduction of the angle of incidence. The correction ratio for rotation by upward passage of light through the coverglass is now reduced from 6:5 to the almost negligible value 21:20. There is a corresponding improvement in the homogeneity of extinction over the microscope field. |
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