Url https://edisondigital.rutgers.edu/document/N320021 Resource class dctype:Text Title [N320021] Technical Note, April 18th, 1886 Creator Edison, Thomas Alva Subject Astronomy Heat and thermodynamics Electricity and magnetism Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1886-04-18 Type Technical Note Identifier N320021 Source 43:310 Rights Thomas Edison National Historical Park Date Created 1886-04-18 Has Version https://archive.org/details/edisonmicrofilm43/page/n318/mode/1up Archive.org Viewer, Microfilm Series Reel 43 Is Part Of N320-F Uri https://edisondigital.rutgers.edu/document/N320021 https://edisondigital.rutgers.edu/document/N320021 --