The Three-Electrode Vacuum Tube as Applied to the Talking Motion Picture
The Phonograph was invented in 1876 and was a household device by 1888. The Motion Picture was invented in 1889 and became a recognized means of public entertainment by 1895. The one is a record of what we hear and the other a record of what we see.
- Print ISSN
- 0096-6460
- Published
- 1928-09
- Content type
- Original Research
- DOI
- 10.5594/J00757
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