A New Sound Slidefilm Projector

J. McWilliams Stone

Sound slidefilm equipment is an audio-visual aid that is rapidly assuming its proper place in the fields of education, sales, and entertainment. This type of equipment fills in the gap between silent still pictures and sound-on-film moving pictures. The purpose of this paper is to describe the design and construction of the EXPLAINETTE “100”, a sound slidefilm unit that has been built with a functional approach to the general application of such equipment.

Print ISSN
Published
1948-01
Content type
Original Research
DOI
10.5594/J12650