{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/42023"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/42023","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Electron microscopy calibration and application of the electron microscope to the solution of problems associated with the manufacture of iron oxide pigments","abstract":"The major experimental problems involved in this investigation were two in number. The first problem was that of obtaining an accurate calibration of the electron microscope to be used for making electron micrographs. This was done by comparison with a secondary standard. A Bausch and Lomb Type ILS metalloscope, which was calibrated by use of a steel grating furnished by the manufacturer, was used as the secondary standard. The second problem was the examination of yellow iron oxide pigments manufactured by three major manufacturers for the purpose of comparing individual pigment particles and also determining particle shape and dimensions. Both problems were successfully solved and the following observations were made: 1. The magnification of the RCA Type ENC electron microscope used in the investigation is 4274. 2. The particle size and structure of yellow iron oxide paint pigments made by different manufacturers are the same, i.e., 0.5 micron by 0.1 micron and rod-like in structure.","abstract_html":"The major experimental problems involved in this investigation were two in number. The first problem was that of obtaining an accurate calibration of the electron microscope to be used for making electron micrographs. This was done by comparison with a secondary standard. A Bausch and Lomb Type ILS metalloscope, which was calibrated by use of a steel grating furnished by the manufacturer, was used as the secondary standard. The second problem was the examination of yellow iron oxide pigments manufactured by three major manufacturers for the purpose of comparing individual pigment particles and also determining particle shape and dimensions. Both problems were successfully solved and the following observations were made: 1. The magnification of the RCA Type ENC electron microscope used in the investigation is 4274. 2. The particle size and structure of yellow iron oxide paint pigments made by different manufacturers are the same, i.e., 0.5 micron by 0.1 micron and rod-like in structure.","abstract_has_math":false,"creators":["Wright, Ralph R.","Dechant, William G."],"institution":"Virginia Tech","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Industrial Physics","degree_department":"Industrial Physics","school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1950,"date_issued":"1950","date_published":"1950","updated_at":"2026-07-22T22:19:12Z","subjects":[],"languages":["en"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["etd-04122010-083505"],"render_values":[{"text":"etd-04122010-083505","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10919/42023","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Industrial Physics"]},{"key":"dc:creator","label":"Author","values":["Wright, Ralph R.","Dechant, William G."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-03-14T21:33:33Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-03-14T21:33:33Z","2010-04-12"]},{"key":"dc:date.issued","label":"Date","values":["1950"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Tech"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.dcmitype","label":"Dc Type Dcmitype","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Industrial Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["etd-04122010-083505"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/42023"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The major experimental problems involved in this investigation were two in number. The first problem was that of obtaining an accurate calibration of the electron microscope to be used for making electron micrographs. This was done by comparison with a secondary standard. A Bausch and Lomb Type ILS metalloscope, which was calibrated by use of a steel grating furnished by the manufacturer, was used as the secondary standard. The second problem was the examination of yellow iron oxide pigments manufactured by three major manufacturers for the purpose of comparing individual pigment particles and also determining particle shape and dimensions. Both problems were successfully solved and the following observations were made: 1. The magnification of the RCA Type ENC electron microscope used in the investigation is 4274. 2. The particle size and structure of yellow iron oxide paint pigments made by different manufacturers are the same, i.e., 0.5 micron by 0.1 micron and rod-like in structure."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["BTD"]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Electron microscopy calibration and application of the electron microscope to the solution of problems associated with the manufacture of iron oxide pigments"]}]}],"canonical_facts":{"dc:contributor.department":["Industrial Physics"],"dc:creator":["Wright, Ralph R.","Dechant, William G."],"dc:date.accessioned":["2014-03-14T21:33:33Z"],"dc:date.available":["2014-03-14T21:33:33Z","2010-04-12"],"dc:date.issued":["1950"],"dc:description.abstract":["The major experimental problems involved in this investigation were two in number. The first problem was that of obtaining an accurate calibration of the electron microscope to be used for making electron micrographs. This was done by comparison with a secondary standard. A Bausch and Lomb Type ILS metalloscope, which was calibrated by use of a steel grating furnished by the manufacturer, was used as the secondary standard. The second problem was the examination of yellow iron oxide pigments manufactured by three major manufacturers for the purpose of comparing individual pigment particles and also determining particle shape and dimensions. Both problems were successfully solved and the following observations were made: 1. The magnification of the RCA Type ENC electron microscope used in the investigation is 4274. 2. The particle size and structure of yellow iron oxide paint pigments made by different manufacturers are the same, i.e., 0.5 micron by 0.1 micron and rod-like in structure."],"dc:description.degree":["Master of Science"],"dc:format.medium":["BTD"],"dc:format.mimetype":["application/pdf"],"dc:identifier.other":["etd-04122010-083505"],"dc:identifier.uri":["http://hdl.handle.net/10919/42023"],"dc:language.iso":["en"],"dc:publisher":["Virginia Tech"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["Electron microscopy calibration and application of the electron microscope to the solution of problems associated with the manufacture of iron oxide pigments"],"dc:type":["Thesis"],"dc:type.dcmitype":["Text"],"thesis:degree_discipline":["Industrial Physics"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Virginia Polytechnic Institute"]},"updated_at":"2026-07-22T22:19:12Z"}