pp. 199-201 Notes for lamp blackening experiments using a condenser; p. 201 drawing of lamps "Determination o fthe volts or amperes from center pole lamp and candle power Have a definite relation with life of lamp"; p. 203 unclear drawing; p. 205 drawing of "Apparatus Electromotograph with circular discs of insulating material such as glass with four inches of area, flat disc of platinum with 4 inches area; Thin glass- also mica, Rubber, porcelain, etc, as thin as possible. Use vibrator, Induction primary and also secondary and ascertain if with increased area the Emg action is not a Condenser action"; p. 207 diaphragm drawings prob. for deaf apparatus

Edison, Mina Miller (Mrs Thomas A.)

1886-03-26

1880-1889

Technical Note

Incandescent lamp

Motors

Microphone and other acoustic devices

N314199

N314

[N314199], Technical Note, Mina Miller (Mrs Thomas A.) Edison, March 26th, 1886

42:912

Thomas Edison National Historical Park

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University