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Updated: June 11, 2025
So have written the P.M. on these lines and shall send K. the carbons of all my letters to him. To K. himself I have written backing up my cable and begging for a Brigade of Gurkhas.
But it seems exceedingly probable that a compromise will ultimately be effected between the methods adopted for making water-gas and calcium carbide respectively, the electric current being employed to keep the carbons incandescent.
The most elementary of these consists of two pieces of carbon, from one to one and a quarter inches in length by one-half inch in width, between which are fixed two nails, about two inches in length, whose extremities, filed to a point, enter small conical apertures in the carbons. The largest nail is here two inches in length, and the shortest three-quarter inch.
He did not know that in order that he might have this work on time she had never left the building since eight A.M. that day. Silently she finished the last page, counted and arranged the sheets, shaking out the intervening carbons, quickly bound each set with heavier cover, and then stood before him with her work.
"Dictation that last?" "No, personal query, Penny to Betty." "Yes, then, it is very good. You want this in memorandum form. Any carbons?" "One carbon in the form of a diamond gift from Penny to Betty." Miss Sheridan settled back in her chair, tapped her pretty mouth with her pencil, and surveyed the blond young man. Her eyes were blue frank, capable eyes. "Penny, I like my work here "
With larger carbons, better parobolic mirrors, a different resistance box, better connections, and a more powerful primary current there is no reason why I could not get a light that would make objects more plainly visible than in the daytime, even in the darkest night, and at a great distance." "But what would be the object of such a light, Tom?"
Taking this average in case No. 2 of 2½ volts per machine, from a 50 light machine, we could run not less than 900 sewing machines, or about 18 to the arc lamp. At $1 per month per machine an income of $900 per month would be derived from a 50 light machine without any lamp expenses, such as carbons, repairs on lamps, globes, etc.
Cutting off the light by the ray-filter, and placing at the focus a thin sheet of platinized platinum, the invisible rays declare their presence and distribution, by stamping upon the platinum a white-hot image of the carbons. Polarization of Heat. Whether radiant heat be capable of polarization or not was for a long time a subject of discussion.
In this great crowd were many public officials and men of prominence in all walks of life, who were enthusiastic in their praises. In the mean time, the mind that conceived and made practical this invention could not rest content with anything less than perfection, so far as it could be realized. Edison was not satisfied with paper carbons. They were not fully up to the ideal that he had in mind.
Experiments of a very definite kind have not yet been made as to the nature of the arc produced by induced currents developed in alternating current machines; but, from the experiments made with electric candles, we are forced to admit that the current reacts as if it were alternately reversed through the arc, since the carbons are used up to an equal degree; and, moreover, Mr.
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