{"id":"https://openalex.org/W3000669643","doi":"https://doi.org/10.1088/1361-6404/ab67d7","title":"A note on Purcell\u2019s basic explanation of magnetic forces","display_name":"A note on Purcell\u2019s basic explanation of magnetic forces","publication_year":2020,"publication_date":"2020-01-06","ids":{"openalex":"https://openalex.org/W3000669643","doi":"https://doi.org/10.1088/1361-6404/ab67d7","mag":"3000669643"},"language":"en","primary_location":{"id":"doi:10.1088/1361-6404/ab67d7","doi":"https://doi.org/10.1088/1361-6404/ab67d7","is_oa":false,"landing_page_url":"https://doi.org/10.1088/1361-6404/ab67d7","pdf_url":null,"source":{"id":"https://openalex.org/S118704488","display_name":"European Journal of Physics","issn_l":"0143-0807","issn":["0143-0807","1361-6404"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","norway-1","poland-40","russia-white-list-3"],"host_organization":"https://openalex.org/P4310320083","host_organization_name":"IOP Publishing","host_organization_lineage":["https://openalex.org/P4310320083","https://openalex.org/P4310311669"],"host_organization_lineage_names":["IOP Publishing","Institute of Physics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"European Journal of Physics","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["arxiv","crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2108.07169","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"Germano D\u2019Abramo","orcid":"https://orcid.org/0000-0003-1277-7418","observed_orcids":["https://orcid.org/0000-0003-1277-7418"]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Germano D\u2019Abramo","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0003-1277-7418","affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":3325,"currency":"USD","value_usd":3325},"apc_paid":null,"fwci":0.2043,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.39811644,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":93,"max":95},"biblio":{"volume":"41","issue":"2","first_page":"025203","last_page":"025203"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11683","display_name":"Quantum and Classical Electrodynamics","score":0.9994999766349792,"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"}},"topics":[{"id":"https://openalex.org/T11683","display_name":"Quantum and Classical Electrodynamics","score":0.9994999766349792,"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/T11960","display_name":"Relativity and Gravitational Theory","score":0.0003000000142492354,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"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/T12931","display_name":"Educational Methods and Outcomes","score":0.0,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/magnetic-force","display_name":"magnetic force","score":0.7839999794960022},{"id":"https://openalex.org/keywords/current-carrying-wire","display_name":"current-carrying wire","score":0.8190000057220459},{"id":"https://openalex.org/keywords/length-contraction","display_name":"length contraction","score":0.8339999914169312},{"id":"https://openalex.org/keywords/electrostatic-forces","display_name":"electrostatic forces","score":0.7390000224113464},{"id":"https://openalex.org/keywords/special-relativity","display_name":"special relativity","score":0.593999981880188},{"id":"https://openalex.org/keywords/physics-education","display_name":"physics education","score":0.4690000116825104}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.9168000221252441},{"id":"https://openalex.org/C2777293921","wikidata":"https://www.wikidata.org/wiki/Q7316045","display_name":"Rest frame","level":4,"score":0.8345999717712402},{"id":"https://openalex.org/C122679697","wikidata":"https://www.wikidata.org/wiki/Q836595","display_name":"Length contraction","level":3,"score":0.6862000226974487},{"id":"https://openalex.org/C163415756","wikidata":"https://www.wikidata.org/wiki/Q126473","display_name":"Contraction (grammar)","level":2,"score":0.6557999849319458},{"id":"https://openalex.org/C77265313","wikidata":"https://www.wikidata.org/wiki/Q879844","display_name":"Rest (music)","level":2,"score":0.623199999332428},{"id":"https://openalex.org/C172849965","wikidata":"https://www.wikidata.org/wiki/Q3148875","display_name":"Reference frame","level":3,"score":0.552299976348877},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.5371999740600586},{"id":"https://openalex.org/C126042441","wikidata":"https://www.wikidata.org/wiki/Q1324888","display_name":"Frame (networking)","level":2,"score":0.4657999873161316},{"id":"https://openalex.org/C188082385","wikidata":"https://www.wikidata.org/wiki/Q73792","display_name":"Charge (physics)","level":2,"score":0.42590001225471497},{"id":"https://openalex.org/C74992021","wikidata":"https://www.wikidata.org/wiki/Q184876","display_name":"Frame of reference","level":2,"score":0.4212000072002411},{"id":"https://openalex.org/C40937832","wikidata":"https://www.wikidata.org/wiki/Q1111","display_name":"Electric charge","level":2,"score":0.3917999863624573},{"id":"https://openalex.org/C115260700","wikidata":"https://www.wikidata.org/wiki/Q11408","display_name":"Magnetic field","level":2,"score":0.3652999997138977},{"id":"https://openalex.org/C33332235","wikidata":"https://www.wikidata.org/wiki/Q18362","display_name":"Theoretical physics","level":1,"score":0.36309999227523804},{"id":"https://openalex.org/C101879516","wikidata":"https://www.wikidata.org/wiki/Q2101","display_name":"Elementary charge","level":3,"score":0.3562999963760376},{"id":"https://openalex.org/C3079626","wikidata":"https://www.wikidata.org/wiki/Q234881","display_name":"Quantum electrodynamics","level":1,"score":0.3361000120639801},{"id":"https://openalex.org/C2780310539","wikidata":"https://www.wikidata.org/wiki/Q12547192","display_name":"Imperfect","level":2,"score":0.29820001125335693},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.275299996137619},{"id":"https://openalex.org/C81263218","wikidata":"https://www.wikidata.org/wiki/Q7330289","display_name":"Relativistic quantum chemistry","level":2,"score":0.27230000495910645},{"id":"https://openalex.org/C32848918","wikidata":"https://www.wikidata.org/wiki/Q845789","display_name":"Observable","level":2,"score":0.26660001277923584},{"id":"https://openalex.org/C106491032","wikidata":"https://www.wikidata.org/wiki/Q377930","display_name":"Classical electromagnetism","level":2,"score":0.26499998569488525},{"id":"https://openalex.org/C150708132","wikidata":"https://www.wikidata.org/wiki/Q744771","display_name":"Charge density","level":2,"score":0.2572999894618988},{"id":"https://openalex.org/C2777267654","wikidata":"https://www.wikidata.org/wiki/Q3519023","display_name":"Test (biology)","level":2,"score":0.2517000138759613}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1088/1361-6404/ab67d7","doi":"https://doi.org/10.1088/1361-6404/ab67d7","is_oa":false,"landing_page_url":"https://doi.org/10.1088/1361-6404/ab67d7","pdf_url":null,"source":{"id":"https://openalex.org/S118704488","display_name":"European Journal of Physics","issn_l":"0143-0807","issn":["0143-0807","1361-6404"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","jufo-1","norway-1","poland-40","russia-white-list-3"],"host_organization":"https://openalex.org/P4310320083","host_organization_name":"IOP Publishing","host_organization_lineage":["https://openalex.org/P4310320083","https://openalex.org/P4310311669"],"host_organization_lineage_names":["IOP Publishing","Institute of Physics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"European Journal of Physics","raw_type":"journal-article"},{"id":"pmh:oai:arXiv.org:2108.07169","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/2108.07169","pdf_url":"https://arxiv.org/pdf/2108.07169","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"doi:10.48550/arxiv.2108.07169","doi":"https://doi.org/10.48550/arxiv.2108.07169","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2108.07169","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article-journal"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2108.07169","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/2108.07169","pdf_url":"https://arxiv.org/pdf/2108.07169","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"sustainable_development_goals_aurora":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":3,"referenced_works":["https://openalex.org/W2041728960","https://openalex.org/W3129992994","https://openalex.org/W4244497617"],"related_works":[],"abstract_inverted_index":{"Abstract":[0],"In":[1,116],"the":[2,12,35,38,43,46,51,54,59,62,67,70,75,79,92,96,107,113,117,160,166,185],"1960s,":[3],"E":[4],"M":[5],"Purcell":[6],"presented":[7,174],"a":[8,17,23,86],"basic":[9],"explanation":[10],"of":[11,42,50,58,78,95],"magnetic":[13,114],"force":[14,32],"experienced":[15,100],"by":[16],"test":[18,80,97],"charge":[19,87,98],"moving":[20,65],"parallel":[21],"to":[22,28],"stationary":[24,47],"current-carrying":[25],"wire.":[26,161],"According":[27],"Purcell\u2019s":[29,123,136,179],"derivation,":[30],"this":[31],"results":[33],"from":[34],"difference":[36,84],"between":[37],"relativistic":[39,55],"length":[40,56],"contraction":[41,57,83],"distance":[44,60],"among":[45,61],"positive":[48],"charges":[49,64,71],"wire":[52],"and":[53,131,142,145,156,175,187],"negative":[63],"in":[66,74,91,106,159,181],"wire,":[68],"when":[69,177],"are":[72],"observed":[73],"rest":[76,93],"frame":[77,94,109],"charge.":[81],"The":[82],"generates":[85,129],"density":[88],"unbalance":[89],"that":[90,122,135,154,165],"is":[99,110,125],"as":[101,112,151],"an":[102,140],"electrostatic":[103],"force,":[104],"while":[105],"lab":[108],"perceived":[111],"force.":[115],"present":[118],"paper,":[119],"we":[120,163],"show":[121],"approach":[124,180],"problematic":[126],"since":[127],"it":[128],"inconsistencies":[130],"paradoxes.":[132],"We":[133],"maintain":[134],"derivation":[137],"has":[138],"only":[139],"illustrative":[141],"expository":[143],"value":[144],"should":[146,171],"not":[147],"be":[148,172],"taken":[149],"literally":[150],"describing":[152],"something":[153],"really":[155],"physically":[157],"happens":[158],"Furthermore,":[162],"believe":[164],"difficulties":[167],"pointed":[168],"out":[169],"here":[170],"explicitly":[173],"discussed":[176],"introducing":[178],"physics":[182],"courses":[183],"at":[184],"undergraduate":[186],"graduate":[188],"levels.":[189]},"counts_by_year":[{"year":2020,"cited_by_count":2}],"updated_date":"2026-10-14T16:39:01.820549","created_date":"2020-01-23T00:00:00"}