Issue 4 (April 1940)

  1. Journal of the Society of Motion Picture Engineers — Cover InformationOpen access
  2. Journal of the Society of Motion Picture Engineers — Table of Contents InformationOpen access
  3. Journal of the Society of Motion Picture Engineers — Editorial Board InformationOpen access
  4. The Adjustable Equalizer as a Tool for Selecting Best Response Characteristics Original Research
  5. Solution Agitation by Means of Compressed Air Original Research
  6. Effect of Aeration on the Photographic Properties of Developers Original Research
  7. The Epoch of Progress in Film Fire Prevention Original Research
  8. Safeguarding Theater Sound Equipment with Modern Test Instruments InformationOpen access
  9. Officers and Governors of the Society 1940 InformationOpen access
  10. Committees of the Society InformationOpen access
  11. Current Literature of Interest to the Motion Picture Engineer InformationOpen access
  12. 1940 Spring Convention: Society of Motion Picture Engineers: Chalfonte-Haddon Hall, Atlantic City, N. J. April 21–25, Inclusive InformationOpen access
  13. Abstracts of Papers of the Spring Convention at Atlantic City, N.J. April 22–25, 1940 InformationOpen access
  14. Society Announcements InformationOpen access