when was aluminum invented
Hans Christian Oersted, a Danish chemist, was the first to produce tiny amounts of aluminum in 1825, German chemist Friedrich Wöhler developed a method that produced enough to study the metal's basic properties in 1845.
Meet the man who says he invented the tablet in 1994. Co-workers thought that Roger Fidler was out of his mind when he talked on and on about how newsprint would die and people would get their information from a touchable tablet. That was back in 1994, when laptops were just becoming big.