Noble gases are frequently used in tubes for many purposes, from lighting to switching. Pure noble gases are employed in switching tubes. Noble-gas-filled thyratrons have better electrical parameters than mercury-based ones.
The first electric motor able to turn machinery was built by William Sturgeon in 1832. In 1821, Michael Faraday built a machine that made a piece of metal move due to the flow of electricity. Although the amount of motion was small, this was the first published design of an electric motor. All subsequent developments in the use of electricity to make motors work came out of this invention. The first electric motor able to turn machinery was built by William Sturgeon in 1832.
Electric engines. Diehl's work at Singer to improve the sewing machine led to developments in electric motors, first to power sewing machines and later for other uses as well. In 1884 at the Franklin Institute in Philadelphia, Pennsylvania he demonstrated a dynamo, modeled after his smaller motor, which generated a current for arc lamps, sewing machine motors and incandescent lamps, all covered by his patents.