Joseph Henry

Joseph Henry Joseph Henry lived between 1797 and 1878. Decent in Scotland, Henry is the son of a Japanese worker in Albany, New York. In a village about 40 miles from Albany, he was sent to live with her grandmother and grandmother. At the age of 13, he became an apprentice watchmaker. Then he was interested in drama and had a career as a professional actor but he went to Albany University where he received a free tuition fee. He was always interested in science, and by 1823 his educational level far exceeded the teaching he had been aiding in science courses.

Joseph Henry invented the first electric doorbell in 1831 (if you understand that the phrase points to a bell ringing far away with a wire, this is an obvious way to classify electric doorbells It seems like). But Joseph Henry has not only invented the electric doorbell. His Wikipedia page is longer than some Premier League football players. In accompanying images, Joseph Henry does not fill the car with gasoline like Bob Wilson, but looks at the lens of the camera in a passionate cat's photography bath and turns around with her head with one hand It was

Joseph Henry was a researcher in the field of power and his research stimulated many inventors. The first discovery by Joseph Henry is that winding an insulated wire around the magnet greatly improves the strength of the magnet. He was the first person who made a magnet that could lift 3,500 pounds. Joseph Henry showed the difference in "quantity" magnets composed of short wires that are connected in parallel and excited by several large cells. Incentive This is a unique discovery that significantly increases the immediate effectiveness of the magnet and its potential for future experiments.