How much does a social worker make? According to the May 2012 records from the Bureau of Labor Statistics, the mean annual healthcare social worker salary is $51,460, or $24.74 per hour. The lowest ten percent earn $31,410, while the top ten percent make an average of $74,030 annually.
The Leibniz Step Reckoner. Gottfried Leibnizâs 1673 âStep Reckonerâ introduced a design innovation that enabled a single gear to represent any digit from 0 to 9 in just one revolution. This stepped-drum approach dominated calculator design for the next two centuries. Gottfried Leibniz.
A Brief History of the Telecaster. In 1951 the Telecaster was introduced to the world by Leo Fender, a Southern California inventor and businessman. Now a legendary instrument available in dozens of variations, the iconic âTeleâ became the worldâs first successfully mass-produced solid body electric guitar.