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.
Nineteenth Century History : 1875 â 1899. 1875 Telephone invented (see 1876). Electric dental drill patented by George Green. Siegfried Marcus patents an internal combustion engine. While using paraffin in an attempt to invent and improve telegraphy tape, Thomas Alva Edison discovers a way to make duplicate copies of documents instead.