Phonopticon aims to let blind read through sound
Dr F C Brown of the University of Iowa describes a device the phonopticon that converts light impressions into musical tones using selenium crystals and segmented wheels. The machine scans print with a box eye and headphones translate letters into tones, offering reading by sound and potential to distinguish pictures for the blind.
MENTIONED IN THIS ARTICLE
F. C. Brown
University of Iowa
Brown
F.C. Bown
State Unversity of
Iowa
Herkele
California
Institute For the Deaf
Hugh Buckingham, Jr
University of California
Newell Perry
National Society For the Higher Education of the Blind
Wider
Firet
Laws
How Paper Is Made Of Wood From Papyrus To Modern Fiber
An overview of papyrus origins and the evolution of paper making from rags to wood pulp. It notes ancient methods of beating and pressing fibers, then traces the shift to caustic soda boiling and wood fibers, highlighting the rise of mass paper production and the shift away from rag stock. The excerpt also briefly mentions early crystal and detector concepts, though those parts are tangential.
MENTIONED IN THIS ARTICLE
Egypt
Nile
White Mice Guard Submarines And Petrol Mortis Fumes
A coroner reports a death from gasoline fumes found in a garage with the car engine running. The piece describes white mice aboard submarines guarding lives by alerting crews to fuel fumes, explaining petrol mortis and post mortem findings of pink lividity and congested organs.
MENTIONED IN THIS ARTICLE
Petromortis
The War Disease of Trench Foot in WWI News
The article explains trench foot as caused by prolonged standing in mud and cold, not marching. It cites French medical leaflets advising dry trenches, dry socks, two pairs of boots, daily foot rubbing, and avoiding prolonged standing. It notes Professor Delepine’s suggestive waterproof bag and air space inside boots to improve prevention.
MENTIONED IN THIS ARTICLE
French Academy At Medicine
Sheridan Delepine
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