{"id":"https://openalex.org/W2022296313","doi":"https://doi.org/10.1109/mim.2014.6810047","title":"Simple DC motors [My favorite experiment]","display_name":"Simple DC motors [My favorite experiment]","publication_year":2014,"publication_date":"2014-04-01","ids":{"openalex":"https://openalex.org/W2022296313","doi":"https://doi.org/10.1109/mim.2014.6810047","mag":"2022296313"},"language":"en","primary_location":{"id":"doi:10.1109/mim.2014.6810047","is_oa":true,"landing_page_url":"https://doi.org/10.1109/mim.2014.6810047","pdf_url":"https://ieeexplore.ieee.org/ielx7/5289/6810025/06810047.pdf","source":{"id":"https://openalex.org/S121167460","display_name":"IEEE Instrumentation & Measurement Magazine","issn_l":"1094-6969","issn":["1094-6969","1941-0123"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Instrumentation & Measurement Magazine","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://ieeexplore.ieee.org/ielx7/5289/6810025/06810047.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5051955810","display_name":"John Witzel","orcid":null},"institutions":[{"id":"https://openalex.org/I3129452663","display_name":"Kandahar University","ror":"https://ror.org/0157yqb81","country_code":"AF","type":"education","lineage":["https://openalex.org/I3129452663"]}],"countries":["AF"],"is_corresponding":true,"raw_author_name":"John Witzel","raw_affiliation_strings":["Paladin South in Kandahar, Afghanistan"],"affiliations":[{"raw_affiliation_string":"Paladin South in Kandahar, Afghanistan","institution_ids":["https://openalex.org/I3129452663"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5051955810"],"corresponding_institution_ids":["https://openalex.org/I3129452663"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.07900631,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"17","issue":"2","first_page":"50","last_page":"53"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12692","display_name":"Magnetic Field Sensors Techniques","score":0.6733999848365784,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12692","display_name":"Magnetic Field Sensors Techniques","score":0.6733999848365784,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10468","display_name":"Photovoltaic System Optimization Techniques","score":0.6492000222206116,"subfield":{"id":"https://openalex.org/subfields/2105","display_name":"Renewable Energy, Sustainability and the Environment"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10603","display_name":"Smart Grid Energy Management","score":0.5939000248908997,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/hammer","display_name":"Hammer","score":0.5876859426498413},{"id":"https://openalex.org/keywords/simple","display_name":"Simple (philosophy)","score":0.5070903301239014},{"id":"https://openalex.org/keywords/sort","display_name":"sort","score":0.492049902677536},{"id":"https://openalex.org/keywords/magnet","display_name":"Magnet","score":0.4474666714668274},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.3776092529296875},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3738972544670105},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.36451464891433716},{"id":"https://openalex.org/keywords/mechanical-engineering","display_name":"Mechanical engineering","score":0.24178245663642883},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2299228310585022},{"id":"https://openalex.org/keywords/arithmetic","display_name":"Arithmetic","score":0.16291332244873047}],"concepts":[{"id":"https://openalex.org/C13655849","wikidata":"https://www.wikidata.org/wiki/Q25294","display_name":"Hammer","level":2,"score":0.5876859426498413},{"id":"https://openalex.org/C2780586882","wikidata":"https://www.wikidata.org/wiki/Q7520643","display_name":"Simple (philosophy)","level":2,"score":0.5070903301239014},{"id":"https://openalex.org/C88548561","wikidata":"https://www.wikidata.org/wiki/Q347599","display_name":"sort","level":2,"score":0.492049902677536},{"id":"https://openalex.org/C16389437","wikidata":"https://www.wikidata.org/wiki/Q11421","display_name":"Magnet","level":2,"score":0.4474666714668274},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3776092529296875},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3738972544670105},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.36451464891433716},{"id":"https://openalex.org/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","level":1,"score":0.24178245663642883},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2299228310585022},{"id":"https://openalex.org/C94375191","wikidata":"https://www.wikidata.org/wiki/Q11205","display_name":"Arithmetic","level":1,"score":0.16291332244873047},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/mim.2014.6810047","is_oa":true,"landing_page_url":"https://doi.org/10.1109/mim.2014.6810047","pdf_url":"https://ieeexplore.ieee.org/ielx7/5289/6810025/06810047.pdf","source":{"id":"https://openalex.org/S121167460","display_name":"IEEE Instrumentation & Measurement Magazine","issn_l":"1094-6969","issn":["1094-6969","1941-0123"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Instrumentation & Measurement Magazine","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1109/mim.2014.6810047","is_oa":true,"landing_page_url":"https://doi.org/10.1109/mim.2014.6810047","pdf_url":"https://ieeexplore.ieee.org/ielx7/5289/6810025/06810047.pdf","source":{"id":"https://openalex.org/S121167460","display_name":"IEEE Instrumentation & Measurement Magazine","issn_l":"1094-6969","issn":["1094-6969","1941-0123"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Instrumentation & Measurement Magazine","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2022296313.pdf","grobid_xml":"https://content.openalex.org/works/W2022296313.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2899084033","https://openalex.org/W2322268536","https://openalex.org/W597548609","https://openalex.org/W2066769432","https://openalex.org/W4245223055","https://openalex.org/W2114141008","https://openalex.org/W4285009037","https://openalex.org/W1975330574","https://openalex.org/W2363865999"],"abstract_inverted_index":{"I":[0,50,66,90],"am":[1],"sure":[2,91],"quite":[3,53],"a":[4,18,31,37,71,75,87],"few":[5],"of":[6,39,96,136],"us":[7],"remember":[8],"the":[9,23,59,119,134],"first":[10],"time":[11],"we":[12],"clamped":[13],"an":[14],"old":[15],"speaker":[16],"in":[17,25,45,55],"vise":[19,34],"and":[20,36,46,101,122],"tore":[21],"out":[22],"magnet;":[24],"days":[26],"past":[27],"it":[28,43,57],"probably":[29,78],"involved":[30],"large":[32],"hammer,":[33],"grips":[35],"lot":[38],"sweat,":[40],"but":[41,82],"eventually":[42],"gave":[44],"freed":[47],"itself,":[48],"although":[49],"was":[51,69],"never":[52],"successful":[54],"freeing":[56],"from":[58],"surrounding":[60],"flux":[61],"concentrators":[62],"as":[63,65],"hard":[64],"tried,":[67],"this":[68],"always":[70],"frustrating":[72],"setback.":[73],"As":[74],"child":[76],"you":[77,83],"didn't":[79],"realize":[80],"it,":[81],"were":[84,110,132],"actually":[85],"disassembling":[86],"linear":[88],"motor;":[89],"didn't.":[92],"Magnets":[93],"seemed":[94,141],"sort":[95],"magical":[97],"at":[98],"that":[99,130],"age,":[100],"besides":[102],"providing":[103],"more":[104],"than":[105],"one":[106],"pinched":[107],"finger,":[108],"they":[109,114,131,140],"treasured":[111],"toys":[112],"until":[113],"ended":[115],"up":[116],"stuck":[117],"to":[118,142],"refrigerator":[120],"door,":[121],"your":[123],"mom":[124],"got":[125],"mad":[126],"when":[127],"she":[128],"discovered":[129],"scratching":[133],"paint":[135],"her":[137],"prized":[138],"appliance;":[139],"magically":[143],"disappear":[144],"after":[145],"that.":[146]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}