dc.contributor.author | Cavicchi, Elizabeth | |
dc.date.accessioned | 2023-08-22T14:44:34Z | |
dc.date.available | 2023-08-22T14:44:34Z | |
dc.date.issued | 2006 | |
dc.identifier.issn | 0003-3790 | |
dc.identifier.issn | 1464-505X | |
dc.identifier.uri | https://hdl.handle.net/1721.1/151798 | |
dc.description.abstract | Faraday demonstrated electromagnetic induction in 1831 using an iron ring wound with two wire coils; on interrupting battery current in one coil, momentary currents arose in the other. Between Faraday’s ring and the induction coil, coiled instruments developed via meandering paths. This paper explores the opening phase of that work in the late 1830s, as the iron core, primary wire coil and secondary wire coil were researched and differentiated. ‘Working knowledge’ (defined by Baird) gained with materials and phenomena was crucial to innovations. To understand these material-based interactions, I experimented with hand-wound coils, along with examining historical texts, drawings and artefacts. My experience recovered the historical dead-end of two-wire coils and ensuing work with long-coiled single conductors initiated by Faraday and Henry. The shock and spark heightened in these coils provided feedback to the many instrumental configurations tested by Page, Callan, Sturgeon, Bachhoffner, and others. The continuous conductor differentiated into two segments soldered together: a thick short wire carrying battery current and a long thin wire for elevating shocks (voltage). The joined wires eventually separated, yet their transitional connection documents belief that the induced effects depend on continuity. These coiled instruments, with their intertwined histories, show experimental work and understandings in the process of developing. Seeing the nonlinear paths by which these instruments developed deepens our understanding of historical experiences, and of how people learn. | en_US |
dc.publisher | Informa UK Limited | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1080/00033790600741018 | en_US |
dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | en_US |
dc.source | Elizabeth Cavicchi | en_US |
dc.title | Nineteenth-Century Developments in Coiled Instruments and Experiences with Electromagnetic Induction | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Cavicchi, Elizabeth. "Nineteenth-century developments in coiled instruments and experiences with electromagnetic induction." Annals of Science 63, no. 3 (2006): 319-361. https://doi.org/10.1080/00033790600741018 | en_US |
dc.contributor.department | Edgerton Center (Massachusetts Institute of Technology) | en_US |
dc.relation.journal | Annals of Science | en_US |
dc.eprint.version | Author's final manuscript | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dc.identifier.doi | https://doi.org/10.1080/00033790600741018 | |
dspace.date.submission | 2023-08-07T18:53:34Z | |
mit.journal.volume | 63 | en_US |
mit.journal.issue | 3 | en_US |
mit.license | PUBLISHER_POLICY | |
mit.metadata.status | Authority Work and Publication Information Needed | en_US |