invention - the light bulb

An amazing invention that is something we use and see every single day was invented in the late 19th century which was the light bulb. Thomas Edison spent hours on getting every detail of the light bulb perfect, and obviously we can see that he exceeded his expectations. The light bulb is extremely important because it gives us light in any type of room. If we did not have the light bulb our eye sight would be extremely poor, and many things that we do today that we take for granted such as doing a simple homework assignment would not be able to be achieved without the light bulb.