Kinescope was pioneered in 1940s for preserving and re-broadcasting TV programs. Term originally referred to CRT television receivers, patented by Vladimir K. Zworykin. First British surviving example was Adelaide Hall's performance at RadiOlympia in 1947
First plasma display system described by Hungarian engineer Tihanyi in 1936. First practical plasma display invented at University of Illinois in 1964. Panaplex display developed by Burroughs Corporation in early 1970s. IBM introduced first 19-inch plasma display in 1983
Daguerreotype was first publicly available photographic process in 1839. Process used silver-plated copper plates and mercury fumes. Niépce's heliography process was improved by Daguerre and his son Isidore. Process was kept secret until French government granted it free worldwide
Grayscale images contain only light intensity information per pixel. Contrast ranges from black (weakest) to white (strongest). Distinct from one-bit black-and-white images
Gamut refers to the colors that can be accurately represented by devices. Term originated from medieval Latin "gamma ut" meaning lowest G scale tone. Shakespeare's use attributed to Thomas Morley
Camera obscura projects inverted images through small aperture. Chinese philosopher Mozi first documented camera obscura principle. Portable camera obscura devices appeared in tents by late 17th century. Ibn al-Haytham made significant contributions to camera obscura understanding