โ Scribed by W.
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
All the advance made in illuminating engineering has been made by utilizing higher and higher temperatures. Attempts at producing light by the electric current were made by heating wire conductors to a high temperature, and the first attempt at an incandescent lamp was with a platinum wire; but plat
## Halogen lamps have been on the market for some time; they are replacing the conventional lamp in many fields except general service (domestic) applications. Their relatively small bulbs contain small amounts of halogen in addition to an inert gas. The mode of action of the iodine lamp, which de
230 N6.tes and Comments. [J. F. I., NOTES AND COMMENTS. ~ REPORT OF THE NICARAGUA CANAL COMMISSION. The New York t[erald of recent date publishes what is declared to be a full abstract of the conclusions of the Commission of Engineers appointed by Congress to investigate the plans and estimates of t