This notebook dates from December 1878. All of the entries are by Edison and relate to work on the electric light. There are notes on carbon, platinum, and other materials; calculations and notes on gas, including comparisons of calculations made by Moses Farmer and Edison; notes and drawings relating to electric power distribution and the need for high resistance lamps; and drawings of lamps and generators. The label on the front cover is marked "short notes -phrases" [crossed out]. The book contains 59 numbered pages.
Blank pages: 55-59.
Several pages from this notebook and from Notebook #9 (N-78-12-15.1) were published as Doc. 1621 in The Papers of Thomas A. Edison, Vol. 4. The images appear in the following order: Notebook #9, pages 3-13; Notebook #192, pages 23-39.
[N192001] Technical Note, December 1878 1878-12-00
[N192009] Technical Note, December 7th, 1878 1878-12-07
[N192019], Technical Note, Thomas Alva Edison, December 15th, 1878 1878-12-15
[N192023] Technical Note, December 15th, 1878 1878-12-15
[N192051] Technical Note, December 1878 1878-12-00