Url https://edisondigital.rutgers.edu/document/N320043 Resource class dctype:Text Title [N320043], Technical Note, Thomas Alva Edison, April 21st, 1886 Creator Edison, Thomas Alva Subject Cosmology Heat and thermodynamics Electricity and magnetism Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1886-04-21 Type Technical Note Identifier N320043 Source 43:321 Rights Thomas Edison National Historical Park Date Created 1886-04-21 Has Version https://archive.org/details/edisonmicrofilm43/page/n329/mode/1up Archive.org Viewer, Microfilm Series Reel 43 Is Part Of N320-F Uri https://edisondigital.rutgers.edu/document/N320043 https://edisondigital.rutgers.edu/document/N320043 --