Many people who have been injured have some form of physical therapy as adjunct to the care received by physicians. Adjunctive therapy is also very common in the treatment of any mental illnesses. In addition to drug treatment, which can help reduce symptoms, psychotherapy is frequently used.
American inventor â Trained as an electrical engineer at Tennessee State University and Stanford University, and working in the field of wireless communication for over 20 years, Russell has â¦
The first cellular phone was invented and demonstrated in 1973 by Martin Cooper, an engineer and general manager for Motorola, who successfully developed a portable handset using cellular communications technology. Cooper made the first ever cellular phone call in April 1973 using the prototype Motorola Dyna-Tac.However, Cooper's first cellphone was the result of decades of research and development into mobile radio communications, and cellphones would not be widely used until 20 years after the Dyna-Tac.ooper made the first ever cellular phone call in April 1973 using the prototype Motorola Dyna-Tac. However, Cooper's first cellphone was the result of decades of research and development into mobile radio communications, and cellphones would not be widely used until 20 years after the Dyna-Tac.