{"id":"https://openalex.org/W2118945677","doi":"https://doi.org/10.6028/jres.095.039","title":"Recommended values of the fundamental physical constants: A status report","display_name":"Recommended values of the fundamental physical constants: A status report","publication_year":1990,"publication_date":"1990-09-01","ids":{"openalex":"https://openalex.org/W2118945677","doi":"https://doi.org/10.6028/jres.095.039","mag":"2118945677","pmid":"https://pubmed.ncbi.nlm.nih.gov/28179787","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/4930015"},"language":"en","primary_location":{"id":"doi:10.6028/jres.095.039","doi":"https://doi.org/10.6028/jres.095.039","is_oa":true,"landing_page_url":"https://doi.org/10.6028/jres.095.039","pdf_url":"https://doi.org/10.6028/jres.095.039","source":{"id":"https://openalex.org/S59628528","display_name":"Journal of Research of the National Institute of Standards and Technology","issn_l":"1044-677X","issn":["1044-677X","2165-7254"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","jufo-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310316732","host_organization_name":"The National Institute of Standards and Technology","host_organization_lineage":["https://openalex.org/P4310316732"],"host_organization_lineage_names":["The National Institute of Standards and Technology"],"type":"journal"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Research of the National Institute of Standards and Technology","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://doi.org/10.6028/jres.095.039","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5071826867","display_name":"Barry N. Taylor","orcid":"https://orcid.org/0000-0002-0798-9224","observed_orcids":["https://orcid.org/0000-0002-0798-9224"]},"institutions":[{"id":"https://openalex.org/I1321296531","display_name":"National Institute of Standards and Technology","ror":"https://ror.org/05xpvk416","country_code":"US","type":"government","lineage":["https://openalex.org/I1321296531","https://openalex.org/I1343035065"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"B.N. Taylor","raw_affiliation_strings":["National Institute of Standards and Technology, Gaithersburg, MD 20899"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Institute of Standards and Technology, Gaithersburg, MD 20899","institution_ids":["https://openalex.org/I1321296531"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5091770764","display_name":"Elaine R. Cohen","orcid":"https://orcid.org/0000-0003-2379-6112","observed_orcids":["https://orcid.org/0000-0003-2379-6112"]},"institutions":[{"id":"https://openalex.org/I4405256118","display_name":"Rockwell International (United States)","ror":"https://ror.org/03sh0x419","country_code":"US","type":"company","lineage":["https://openalex.org/I4405256118"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"E.R. Cohen","raw_affiliation_strings":["Rockwell International Science Center, Thousand Oaks, CA 91360"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Rockwell International Science Center, Thousand Oaks, CA 91360","institution_ids":["https://openalex.org/I4405256118"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":13.9455,"has_fulltext":true,"cited_by_count":114,"citation_normalized_percentile":{"value":0.99161777,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"95","issue":"5","first_page":"497","last_page":"497"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11890","display_name":"Scientific Measurement and Uncertainty Evaluation","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1804","display_name":"Statistics, Probability and Uncertainty"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T11890","display_name":"Scientific Measurement and Uncertainty Evaluation","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1804","display_name":"Statistics, Probability and Uncertainty"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12004","display_name":"Advanced Frequency and Time Standards","score":0.0,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12516","display_name":"Advanced Mathematical Theories and Applications","score":0.0,"subfield":{"id":"https://openalex.org/subfields/3109","display_name":"Statistical and Nonlinear Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/fundamental-physical-constants","display_name":"fundamental physical constants","score":0.9890000224113464},{"id":"https://openalex.org/keywords/codata","display_name":"CODATA","score":0.800000011920929},{"id":"https://openalex.org/keywords/least-squares-adjustment","display_name":"least squares adjustment","score":0.875},{"id":"https://openalex.org/keywords/planck-constant","display_name":"Planck constant","score":0.8629999756813049},{"id":"https://openalex.org/keywords/fine-structure-constant","display_name":"fine-structure constant","score":0.9990000128746033},{"id":"https://openalex.org/keywords/uncertainty-reduction","display_name":"uncertainty reduction","score":0.35199999809265137},{"id":"https://openalex.org/keywords/recommended-values","display_name":"recommended values","score":0.699999988079071}],"concepts":[{"id":"https://openalex.org/C53105687","wikidata":"https://www.wikidata.org/wiki/Q173227","display_name":"Physical constant","level":2,"score":0.6237536072731018},{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.6128139495849609},{"id":"https://openalex.org/C2776291640","wikidata":"https://www.wikidata.org/wiki/Q2912517","display_name":"Value (mathematics)","level":2,"score":0.5583925843238831},{"id":"https://openalex.org/C2781089630","wikidata":"https://www.wikidata.org/wiki/Q21856745","display_name":"Realization (probability)","level":2,"score":0.5553504228591919},{"id":"https://openalex.org/C197111296","wikidata":"https://www.wikidata.org/wiki/Q122894","display_name":"Planck constant","level":3,"score":0.49869656562805176},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.48908740282058716},{"id":"https://openalex.org/C12997251","wikidata":"https://www.wikidata.org/wiki/Q567560","display_name":"Anomaly (physics)","level":2,"score":0.4519467353820801},{"id":"https://openalex.org/C179254644","wikidata":"https://www.wikidata.org/wiki/Q13222844","display_name":"Moment (physics)","level":2,"score":0.4326632618904114},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.3629235625267029},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.35888612270355225},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.35201358795166016},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3325004577636719},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.24011465907096863},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.21196365356445312},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C84114770","wikidata":"https://www.wikidata.org/wiki/Q46344","display_name":"Quantum","level":2,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.6028/jres.095.039","doi":"https://doi.org/10.6028/jres.095.039","is_oa":true,"landing_page_url":"https://doi.org/10.6028/jres.095.039","pdf_url":"https://doi.org/10.6028/jres.095.039","source":{"id":"https://openalex.org/S59628528","display_name":"Journal of Research of the National Institute of Standards and Technology","issn_l":"1044-677X","issn":["1044-677X","2165-7254"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","jufo-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310316732","host_organization_name":"The National Institute of Standards and Technology","host_organization_lineage":["https://openalex.org/P4310316732"],"host_organization_lineage_names":["The National Institute of Standards and Technology"],"type":"journal"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Research of the National Institute of Standards and Technology","raw_type":"journal-article"},{"id":"pmh:oai:pubmedcentral.nih.gov:4930015","doi":null,"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/4930015","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"J Res Natl Inst Stand Technol","raw_type":"Text"},{"id":"pmid:28179787","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/28179787","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of research of the National Institute of Standards and Technology","raw_type":"Journal Article"},{"id":"pmh:oai:cdm16009.contentdm.oclc.org:p16009coll6/72599","doi":null,"is_oa":true,"landing_page_url":"http://cdm16009.contentdm.oclc.org/u?/p16009coll6,72599","pdf_url":null,"source":{"id":"https://openalex.org/S7407052254","display_name":"National Institute of Standards and Technology (NIST)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Journal of Research of the National Institute of Standards and Technology","raw_type":null}],"best_oa_location":{"id":"doi:10.6028/jres.095.039","doi":"https://doi.org/10.6028/jres.095.039","is_oa":true,"landing_page_url":"https://doi.org/10.6028/jres.095.039","pdf_url":"https://doi.org/10.6028/jres.095.039","source":{"id":"https://openalex.org/S59628528","display_name":"Journal of Research of the National Institute of Standards and Technology","issn_l":"1044-677X","issn":["1044-677X","2165-7254"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","jufo-1","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310316732","host_organization_name":"The National Institute of Standards and Technology","host_organization_lineage":["https://openalex.org/P4310316732"],"host_organization_lineage_names":["The National Institute of Standards and Technology"],"type":"journal"},"license":"public-domain","license_id":"https://openalex.org/licenses/public-domain","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Research of the National Institute of Standards and Technology","raw_type":"journal-article"},"sustainable_development_goals":[],"sustainable_development_goals_aurora":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2118945677.pdf","grobid_xml":"https://content.openalex.org/works/W2118945677.grobid-xml"},"referenced_works_count":22,"referenced_works":["https://openalex.org/W9276525","https://openalex.org/W1658856141","https://openalex.org/W1965261159","https://openalex.org/W1973912020","https://openalex.org/W1976506718","https://openalex.org/W1991519530","https://openalex.org/W1992423053","https://openalex.org/W2000485257","https://openalex.org/W2026074031","https://openalex.org/W2027470625","https://openalex.org/W2031841604","https://openalex.org/W2035402934","https://openalex.org/W2051858225","https://openalex.org/W2077838586","https://openalex.org/W2082200572","https://openalex.org/W2084005915","https://openalex.org/W2149939727","https://openalex.org/W2198721300","https://openalex.org/W2569701805","https://openalex.org/W4236035839","https://openalex.org/W6601602020","https://openalex.org/W6606216953"],"related_works":["https://openalex.org/W2312779956","https://openalex.org/W1970449529","https://openalex.org/W40317680","https://openalex.org/W4394658252","https://openalex.org/W7097103290","https://openalex.org/W4211186737","https://openalex.org/W2000837180","https://openalex.org/W1574331125","https://openalex.org/W4210559391","https://openalex.org/W1556587736"],"abstract_inverted_index":{"We":[0],"summarize":[1],"the":[2,7,13,16,22,30,37,43,50,60,63,67,70,77,101,106,114,119,124,129,135,141,154,161,182,190,199],"principal":[3],"advances":[4],"made":[5],"in":[6,69,145,152],"fundamental":[8],"physical":[9],"constants":[10,23,51],"field":[11],"since":[12,95],"completion":[14],"of":[15,21,33,49,105,113,118,128,134,143,148,158,160,170,194,201],"1986":[17,31,64,78,191],"CODATA":[18,192],"least-squares":[19,39],"adjustment":[20,184],"and":[24,36,82,131,156],"discuss":[25],"their":[26,149],"implications":[27],"for":[28],"both":[29],"set":[32,193,200],"recommended":[34,195],"values":[35,48,71,155,196],"next":[38,183],"adjustment.":[40],"In":[41],"general,":[42],"new":[44,90,98],"results":[45,99,169],"lead":[46],"to":[47,55],"with":[52],"uncertainties":[53,61,81,157],"5":[54],"7":[56],"times":[57],"smaller":[58],"than":[59,75],"assigned":[62,79],"values.":[65],"However,":[66],"changes":[68],"themselves":[72],"are":[73,84],"less":[74],"twice":[76],"one-standard-deviation":[80],"thus":[83],"not":[85],"highly":[86,165],"significant.":[87],"Although":[88],"much":[89],"data":[91,177],"has":[92],"become":[93],"available":[94],"1986,":[96],"three":[97,176],"dominate":[100],"analysis:":[102],"a":[103,111,116,132],"value":[104,117,133],"Planck":[107],"constant":[108,121,138],"obtained":[109,122,139,180],"from":[110,123,140],"realization":[112],"watt;":[115],"fine-structure":[120],"magnetic":[125],"moment":[126],"anomaly":[127],"electron;":[130],"molar":[136],"gas":[137],"speed":[142],"sound":[144],"argon.":[146],"Because":[147],"dominant":[150],"role":[151],"determining":[153],"many":[159],"constants,":[162],"it":[163],"is":[164,185],"desirable":[166],"that":[167,173],"additional":[168],"comparable":[171],"uncertainty":[172],"corroborate":[174],"these":[175],"items":[178],"be":[179],"before":[181],"carried":[186],"out.":[187],"Until":[188],"then,":[189],"will":[197],"remain":[198],"choice.":[202]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":2},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":5},{"year":2014,"cited_by_count":7},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":5}],"updated_date":"2026-10-28T10:33:24.094632","created_date":"2016-06-24T00:00:00"}
