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Electrical Experimenter (07:12) April 1920

Hugo Gernsback, editor

"If you have ever planted flowers or vegetables and watched them grow from day to day, and from week to week, you have undoubtedly been strongly impressed with the remarkable changes which sometimes occur in a single night in plant growth. But--did you ever notice the change in growth of a plant of flower in the course of an hour, or a minute, or a second? It is possible today to make readily visible the minute growth of plant life, even over such short periods of time as 1/100th of a second."
Electrical Experimenter April 1920 magazine cover
This issue of Electrical Experimenter is from April 1920. The cover story is “Watching Plants Grow.” Other stories include a short fiction piece, building an induction motor, long-distance radio tests, and signaling to Mars via electric light.
Contents of this Issue:
  • Editorial: The Earth’s Interior Molten? (Hugo Gernsback)
  • Electric Power From The Sun
  • The Battle Tracer
  • Heat of Body Detected 600 Feet Away
  • One-Man Subway Train
  • Watching Plants Grow
  • Hello Mars! (H. Winfield Secor)
  • Electricity Foils German Seals (Fred C. Kelly)
  • The Physiophone: Music for the Deaf (H. Gernsback)
  • Electro-Medical Frauds (Joseph H. Kraus)
  • “The Educated Harpoon” (Charles S. Wolfe)
  • Electric Bachelor Maid
  • Telegraph, Cable and Radio Dispatches (Pierre H. Boucheron)
  • Weighing the Earth (Louis Derr)
  • Electrifying Canal Boats and Barges (Robert G. Skerrett)
  • Talking Over a Sunbeam (Prof. A.O. Rankine)
  • Sawing Ice By “Motor”
  • This Fire Alarm “Talks”
  • Automobile News
  • Popular Astronomy: Observing The Heavenly Bodies (Isabel M. Lewis, M.A.)
  • Sir Ernest Rutherford, On The Problems of Radioactivity
  • “Rabbit Contest” Awards
  • Practical Chemistry Experiments (Prof. Floyd L. Darrow)
  • The Constructor: Home-made 110-Volt, 60-Cycle Induction Motor (H.H. Parker)
  • Home-made A.C. Motor
  • The “Finer Workings” of Static Electricity – 2nd Paper (Frederick von Lichtenow)
  • Electro-Monogram Sign for the Boys
  • Measuring Electric Currents With the Eye (C.A. Briggs)
  • Storage Battery Repairing (Henry Klaus)
  • The Electrical Machinist (H. Winfield Secor)
  • How-To-Make-It
  • Wrinkles, Recipes, Formulas (S. Gernsback)
  • Radio Department: Some Long Distance Radio Telephone Tests (Robert F. Gowen)
  • Music 400 Miles by Radio
  • “Direct Current” Transmitter
  • Audions on Alternating Current Again!
  • Latest Radio News
  • New Amateur Wireless Transmitting Set
  • Selective Wireless Control (Everett Leo Deeter)
  • War Versus Pre-War Apparatus (“Sparks”)
  • What To Invent (Jay G. Hobson)
  • Latest Patents
  • With the Amateurs
  • Science With A Bang (Everson Westerling)
  • The Oracle
  • Opportunity Ad-lets

Experimenter Publishing Company, Inc.
Editor: Hugo Gernsback
Issue: Volume 7: Number 12; Whole No. 84; April 1920
Pages: 120
Size: 8-1/4″ x 11-1/2″
Digital edition © 2008 Curtis Philips. All Rights Reserved.

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