There can be little doubt that the rapid technological developments that have characterized the decades since the middle of the 19th century have given great scope for improving the quality of life of disabled people. Disabled Students in Education: Technology, Transition, and Inclusivity reports on 15 research projects aimed at improving the educational prospects of disabled people. Through its discussion of three main themes technology, transition, and inclusivity this book aims to be of interest to disabled students, their parents and teachers, and the people who run, and set policies for,...
There can be little doubt that the rapid technological developments that have characterized the decades since the middle of the 19th century have give...
The life-long inventor, Lee de Forest invented the three-element vacuum tube used between 1906 and 1916 as a detector, amplifier, and oscillator of radio waves. Beginning in 1918 he began to develop a light valve, a device for writing and reading sound using light patterns. While he received many patents for his process, he was initially ignored by the film industry. In order to promote and demonstrate his process he made several hundred sound short films, he rented space for their showing; he sold the tickets and did the publicity to gain audiences for his invention. Lee de Forest officially...
The life-long inventor, Lee de Forest invented the three-element vacuum tube used between 1906 and 1916 as a detector, amplifier, and oscillator of ra...
