Search results
Results from the WOW.Com Content Network
A halogen lamp (also called tungsten halogen, quartz-halogen, and quartz iodine lamp) is an incandescent lamp consisting of a tungsten filament sealed in a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen, such as iodine or bromine.
Lodygin later sold the patent rights to GE. In 1902, Siemens developed a tantalum lamp filament that was more efficient than even graphitized carbon filaments since they could operate at higher temperature. Since tantalum metal has a lower resistivity than carbon, the tantalum lamp filament was quite long and required multiple internal supports.
The company held the patents for the first practical incandescent electric lamp and electrical distribution system of incandescent electric lighting. They also held a patent for an electric meter to measure the amount of electricity used. The inventions were those of Albon Man and William E. Sawyer. They gave the patent rights to the company ...
Under ECE Regulation 37, which governs automotive filament lamps in most of the world, the H1 lamp's nominal rating is 55 W at 12 V, and its test rating is 68 W (maximum) and 1550 ± 15% lumens at 13.2 V. R37 also contains provisions for 6 V, 55 W and 24 V, 70 W H1 lamps. [1]
1921 Junichi Miura creates the first incandescent lightbulb to utilize a coiled coil filament. 1925 Marvin Pipkin invents the first internal frosted lightbulb. 1926 Edmund Germer patents the modern fluorescent lamp. 1927 Oleg Losev creates the first LED (light-emitting diode). 1953 Elmer Fridrich invents the halogen lamp. [14]
Canadian Patent application. Henry Woodward was a Canadian inventor and a major pioneer in the development of the incandescent lamp. [1] He was born in 1832. On July 24, 1874, Woodward and his partner, Mathew Evans, a hotel keeper, filed a Canadian patent application on an electric light bulb.
Aerolux bulbs consumed about 3-5 watts of power. The bulbs had high yield of light produced versus electricity consumed, generally in the range of 50-60 lumens/watt, compared to 12-18 lumens/watt for a tungsten filament incandescent bulb. [9] [failed verification]
Patent 47632, Hemmer for Sewing Machines, May 9, 1865. [3] Patent 252.658 "Vacuum Pump (Improvement of the Geissler-System of vacuum pumps", January 24, 1882 [6] Patent 266.358 "Electric Incandescent Lamp (sockets to connect the filament of carbon and the conducting wires)", October 24, 1882 [7]