The article deals with a forgotten invention of the so-called telectroscope and additional inventions of Jan Szczepanik. The author of a forgotten telectroscope (an electrical device designed to transmit video images and sound at a longer distance) was Polish inventor Jan Szczepanik. According to a Czech physicist Jaroslav Šafránek (1890–1957), the telectroscope method is among the methods using selenium to record and reproduce luminous images – an element whose electrical resistance changes depending on the frequency and intensity of the impacting light. Szczepanik followed up on the work of a German physicist Paul Nipkow, holder of the so-called Nipkow disk patent.
telectroscope; television; inventions; colour film and photography; weaving
ISSN 0300-4414 (print)
ISSN 2788-3485 (online)
founded 1968
Published by Society for the History of Sciences and Technology http://www.sdvt.cz
Pavel Mervart Publishing http://www.pavelmervart.cz/
