{"@context":"http://iiif.io/api/presentation/2/context.json","@id":"https://edisondigital.rutgers.edu/iiif/2/LB007866/manifest","@type":"sc:Manifest","label":"[LB007866], Letter from Thomas Alva Edison to Western Union, George A Hamilton, August 8th, 1882","thumbnail":{"@id":"https://edisondigital.rutgers.edu/files/medium/LB007866/db0795.jpg","@type":"dctypes:Image","format":"image/jpeg","width":984,"height":1086},"license":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":"Provided by The Thomas A. Edison Papers at Rutgers University","related":{"@id":"https://edisondigital.rutgers.edu/document/LB007866","format":"text/html"},"seeAlso":{"@id":"https://edisondigital.rutgers.edu/api/items/77187","format":"application/ld+json"},"metadata":[{"label":"Title","value":"[LB007866], Letter from Thomas Alva Edison to Western Union, George A Hamilton, August 8th, 1882"},{"label":"Editor's Notes","value":"Referring to your favor of 7th inst One of our Z machines [should] be [wound] to give say three volts its resistance would be one ten thousandth of an ohm. We have two armatures now that we use in our regular Z machines one of [.005] ohm resistance and giving 55 volts and one of .14 ohms giving 110 volts. Five hundred [lines] of 100 ohms each could be worked from this machine making the external [resistance] 2 ohms or fourteen times higher than the internal resistance requiring about 200,000 ft lbs of electricity or nine horse power of which 1/14 only is lost on the machine bobbin 1/2 horse power for friction and 7000 ft lbs on [fluid]. We [now] guarantee the machine to run perfectly [s---] and give a steady current [This] [--] [regulator] [Z] as when $1200 set up. We also make attachments to commutators whereby you can run several circuits from the same bobbin each having different volts"},{"label":"Author","value":"Edison, Thomas Alva"},{"label":"Recipient","value":["Western Union","Hamilton, George A"]},{"label":"Date","value":"1882-08-08"},{"label":"Type","value":"Letter"},{"label":"Subject","value":"Dynamos and generators"},{"label":"Folder/Volume ID","value":"LB007-F"},{"label":"Microfilm ID","value":"80:795"},{"label":"Document ID","value":"LB007866"},{"label":"URL","value":"https://edisondigital.rutgers.edu/document/LB007866"},{"label":"Rights","value":"Thomas Edison National Historical Park"},{"label":"Publisher","value":"Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University"},{"label":"Timestamp","value":"8 August 1882"},{"label":"Has Version","value":"Archive.org Viewer, Microfilm Series Reel 80"}],"sequences":[{"@id":"https://edisondigital.rutgers.edu/iiif/2/LB007866/sequence/normal","@type":"sc:Sequence","label":"Current Page Order","viewingDirection":"left-to-right","canvases":[{"@id":"https://edisondigital.rutgers.edu/iiif/2/LB007866/canvas/p1","@type":"sc:Canvas","label":"1","thumbnail":{"@id":"https://edisondigital.rutgers.edu/files/medium/LB007866/db0795.jpg","@type":"dctypes:Image","format":"image/jpeg","width":984,"height":1086},"width":984,"height":1086,"images":[{"@id":"https://edisondigital.rutgers.edu/iiif/2/LB007866/annotation/p0001-image","@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://edisondigital.rutgers.edu/iiif/2/256134/full/984,1086/0/default.jpg","@type":"dctypes:Image","format":"image/jpeg","width":984,"height":1086,"service":{"@context":"http://iiif.io/api/image/2/context.json","@id":"https://edisondigital.rutgers.edu/iiif/2/256134","profile":"http://iiif.io/api/image/2/level2.json"}},"on":"https://edisondigital.rutgers.edu/iiif/2/LB007866/canvas/p1"}]},{"@id":"https://edisondigital.rutgers.edu/iiif/2/LB007866/canvas/p2","@type":"sc:Canvas","label":"2","thumbnail":{"@id":"https://edisondigital.rutgers.edu/files/medium/LB007866/db0796.jpg","@type":"dctypes:Image","format":"image/jpeg","width":894,"height":1092},"width":894,"height":1092,"images":[{"@id":"https://edisondigital.rutgers.edu/iiif/2/LB007866/annotation/p0002-image","@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://edisondigital.rutgers.edu/iiif/2/256135/full/894,1092/0/default.jpg","@type":"dctypes:Image","format":"image/jpeg","width":894,"height":1092,"service":{"@context":"http://iiif.io/api/image/2/context.json","@id":"https://edisondigital.rutgers.edu/iiif/2/256135","profile":"http://iiif.io/api/image/2/level2.json"}},"on":"https://edisondigital.rutgers.edu/iiif/2/LB007866/canvas/p2"}]}]}]}