The methods of petrographic-microscopic research: their relative accuracy and range of application
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| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Washington, DC
Carnegie Inst.
1911
|
| Series: | Publication / Carnegie Institution of Washington
158 |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | 204 S. graph. Darst. |
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| 245 | 1 | 0 | |a The methods of petrographic-microscopic research |b their relative accuracy and range of application |c by Fred Eugen Wright |
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| 490 | 1 | |a Publication / Carnegie Institution of Washington |v 158 | |
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Record in the Search Index
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|---|---|
| adam_text | THE METHODS OF ftl
PETROGRAPHIC-MICROSCOPIC RESEARCH
THEIR RELATIVE ACCURACY AND
RANGE OF APPLICATION
EY
FRED EUGENE WRIGHT
Carnegie Bli
Depositui
IGNATIUS OC
VALKENB :J R
WASHINGTON, D C
PUBLISHED BY THE CARNEGIE INSTITUTION OF WASHINGTON
CONTENTS
PACK
INTRODUCTION 7
The petrographic microscope io
The Gauss equations for paraxial rays 14
Refraction at a single spherical surface 14
Refraction through a lens 15
Principal planes 18
Nodal planes 18
The focal length of a lens system of two components 19
Spherical aberrations 21
Monochromatic light 21
Spherical aberration proper (for the pri ncipal axis) 21
Refraction at a single spherical surface 21
Aplanatic points of a single refracting spherical surface 2 3
Spherical aberration in simple lenses 24
Spherical aberration for object points near the axis (sine condition) 26
Astigmatism 29
Curvature of the field (Petzval condition) 30
Distortion (tangent condition) 30
Chromatic aberrations 31
Diaframs in the microscope 34
Magnification 40
The field of the microscope 42
The physical significance of the numerical a perture 42
Useful and empty magnification in the microscope 47
The optical elements of the microscope len^ system 49
The objective 49
The ocular 52
The condenser : 52
The Nicol prisms 56
The petrographic microscope as an accurate measuring device 57
The adjustment of the petrographic microscope 61
The stereographic, orthographic, gnomonic and angle projections 63
Biot s or Fresnel s rule 68
CHAPTER T 69
Color 69
Pleochroism and absorption 71
Cleavage and crystal habit 71
Character of the principal zone 71
The combination wedge 71
Optical character of birefracting minerals 74
Plate perpendicular to the acute bisectrix 7S
Plate perpendicular to an optic axis 78
Plate parallel to the plane of the optic axes 79
Dispersion of the optic axes 82
Dispersion of the bisectrices 82
CHAPTER II 83
Refractive indices 83
The immersion method 92
The Becke line method 95
The direct measurement of refractive indices 9S
CHAPTER III 101
Birefringence 101
The Newton color scale 108
Summary 114
6 CONTENTS
CHAPTER IV 115
Extinction angles 115
Mathematical formulae for the intensity f light 115
Methods 132
Parallel polarized light 132
Sensitive-tint plate 133
Bravais-Stober plate 134
The Koenigsberger plate 134
The double combination wedge 134
Calderon calcite wedge 135
Quarter-undulation plate of H Traube 135
Twinned selenite plate 136
Artificially twinned quartz plate 136
Bi-nicol ocular 137
Bertrand plate 137
The quartz half-shade plate of S Nakamura 139
Bi-quartz wedge-plate 139
Methods involving rotation of the upper nicol 141
Convergent polarized light 141
The relative sensitiveness of the different methods 142
Experimental tests 145
CHAPTER V 147
Optic axial angle 147
Convergent polarized light 147
The Mallard constant 148
The Becke drawing-table method 152
Methods with the double-screw micrometer ocular; also with the coordinate
micrometer ocular 155
Observations in convergent polarized light 162
Muscovite a 163
Anhydrite 164
The condenser apertometer 172
Summary statement of course of procedure in measuring the optic axial
angle of a mineral plate in convergent polarized light 172
Michel-L amp;vy Method 173
Methods with the universal stage 173
Parallel polarized light 175
The determination of the crystal system of a given mineral by means of the
universal stage 177
The accurate determination of the p sition of an optic axis in the field of
vision 178
Section nearly perpendicular to the optic normal 0 186
Section nearly normal 1o the obtuse bisectrix 187
Probability of encountering sections suitable for optic axial angle measure
ments 189
Methods based on the relative birefringence of known sections 190
Extinction angles of plates in zones whose axes lie in the plane of the optic
binormals 191
Measurement of the optic axial angle on the total refractometer 193
The relative accuracy of the different methods 194
Measurements with the axial-angle apparatus 194
Measurements with the Becke drawi ng-table 194
Measurements with the double-screw micrometer ocular 196
Measurements with the universal stnge 197
Recapitulation 199
|
| any_adam_object | 1 |
| author | Wright, Fred Eugen 1877-1953 |
| author_GND | (DE-588)117428760 |
| author_facet | Wright, Fred Eugen 1877-1953 |
| author_role | aut |
| author_sort | Wright, Fred Eugen 1877-1953 |
| author_variant | f e w fe few |
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| bvnumber | BV015403348 |
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| dewey-full | 552/.0028 |
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| dewey-ones | 552 - Petrology |
| dewey-raw | 552/.0028 |
| dewey-search | 552/.0028 |
| dewey-sort | 3552 228 |
| dewey-tens | 550 - Earth sciences |
| discipline | Geologie / Paläontologie |
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| id | DE-604.BV015403348 |
| illustrated | Illustrated |
| indexdate | 2024-07-09T19:09:17Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-010106695 |
| oclc_num | 2421893 |
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| owner | DE-19 DE-BY-UBM DE-12 DE-29 DE-11 |
| owner_facet | DE-19 DE-BY-UBM DE-12 DE-29 DE-11 |
| physical | 204 S. graph. Darst. |
| psigel | KVST0708 HUB-ZB011201206 |
| publishDate | 1911 |
| publishDateSearch | 1911 |
| publishDateSort | 1911 |
| publisher | Carnegie Inst. |
| record_format | marc |
| series2 | Publication / Carnegie Institution of Washington |
| spelling | Wright, Fred Eugen 1877-1953 Verfasser (DE-588)117428760 aut The methods of petrographic-microscopic research their relative accuracy and range of application by Fred Eugen Wright Washington, DC Carnegie Inst. 1911 204 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Publication / Carnegie Institution of Washington 158 Petrology Carnegie Institution <Washington, DC> Publication 158 (DE-604)BV035415500 158 HEBIS Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010106695&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Wright, Fred Eugen 1877-1953 The methods of petrographic-microscopic research their relative accuracy and range of application Petrology |
| title | The methods of petrographic-microscopic research their relative accuracy and range of application |
| title_auth | The methods of petrographic-microscopic research their relative accuracy and range of application |
| title_exact_search | The methods of petrographic-microscopic research their relative accuracy and range of application |
| title_full | The methods of petrographic-microscopic research their relative accuracy and range of application by Fred Eugen Wright |
| title_fullStr | The methods of petrographic-microscopic research their relative accuracy and range of application by Fred Eugen Wright |
| title_full_unstemmed | The methods of petrographic-microscopic research their relative accuracy and range of application by Fred Eugen Wright |
| title_short | The methods of petrographic-microscopic research |
| title_sort | the methods of petrographic microscopic research their relative accuracy and range of application |
| title_sub | their relative accuracy and range of application |
| topic | Petrology |
| topic_facet | Petrology |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010106695&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV035415500 |
| work_keys_str_mv | AT wrightfredeugen themethodsofpetrographicmicroscopicresearchtheirrelativeaccuracyandrangeofapplication |