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.
What made it difficult for Michael faraday to invent the electric motor? Prior to Faraday, people thought of electricity as a fluid that flowed through conductors. The concept of an electric field -- the idea that there could be an electric for â¦ ce in the air (or even in a vacuum) -- came from Faraday. Without that concept, building an electric motor is difficult, because the entire idea of making a piece of metal move using only an electric current depends on it.