Nothing is more important in a social work education than actual fieldwork and taking on opportunities to serve others as soon as possible. Even if you canât find an internship that is exactly in line with your interests, any interaction with clients and the community builds skills necessary to careers in social work.
After Joseph Henry discovered electric induction in 1831, enabling further development in elect â¦ rical telegraphy, the first practical telegraph was invented by Dr. David Alter of Elderton, Pennsylvania, in 1836.
The first electronic device ever invented is the relay, a remote switch controlled by electricity that was invented in 1835 by Joseph Henry, an American scientist, although it is also claimed that the English inventor Edward Davy certainly invented the electric relay in his electric telegraph c.1835.