February 11, 1847 to
October 18, 1931
Cooper Union (1875–1879)
so that they could see while inventing more. it solved there problem in the dark
you have to screw in a light bulb then pull something or push something then it comes on.
it made an impact of it letting us see in the dark, we wouldn't be able to see in the dark or we want have o lights
how long did it take you to finish it? in a year