This July 1920 issue was the final issue of Electrical Experimenter before its name change to Science & Invention. The cover story is “Chicago’s New Monorail.” The issue also includes an article on the Tesla gasoline turbine engine, a short piece of fiction, listening to signals from Mars, an update on Marconi, and a discussion of overcoming gravity.
Contents of this Issue:
- Editorial: Oil (H. Gernsback)
- Comprest Air for the Sick (George Wall)
- Foiling the Diamond Smuggler (H. Gernsback)
- The Aurora Borealis (Lindley Pyle)
- Shafts of Light Regulate Street Traffic (Edwin F. Linder, M.E.)
- Science in Latest Pictures
- Nature’s Jewels (William M. Butterfield)
- Triple Camera Photos Lightning Flashes (Dr. Alfred Gradenwitz)
- Freak Airplane Photos
- The T-Tube “Sub” Locator
- New Suspended Monorailway
- Do We “See” Electrically (H. WInfield Secor)
- Radio Guides Ship Target
- Alarm Number 18 (Charles S. Wolfe)
- My Message to Mars (Clement Fezandie)
- The Story of Glass (Prof. Floyd L. Darrow)
- More Light for Microscopes (Merrill M. Hunting)
- Dr. Langmuir Has New Theory of Matter
- New Phonograph Talks One Hour
- Radium Bank Starts with $375,000 Capital
- Overcoming Gravitation (George S. Piggott)
- “Home Electrics” (G.L. Hoadley, M.E.)
- Home Mechanics (William M. Butterfield)
- Automobile “Stunts”
- The Tesla Gasoline Turbine (Joseph H. Kraus)
- Is Life Electrical? (Rogers D. Rusk, M.A.)
- Publisher’s Announcement
- Popular Astronomy (Isabel M. Lewis, M.A.)
- Practical Chemical Experiments (Prof. Floyd L. Darrow)
- Electricity From Water-Power (H. WInfield Secor)
- The Constructor: Care of Lead Plate Storage Battery (Jesse J. Hipple)
- Utilizing An Old Magneto Armature (H.H. Parker)
- A 110-Volt Electric Toaster
- An Efficient Primary Battery (W.S. Standiford)
- How to Build a Mechanical Rectifier
- Electric Burglar Alarm
- A Synchronous Vibrating Rectifier
- Three-Color Electric Sign Control (Earl Botten)
- Electrical Machinist (H. WInfield Secor)
- How-To-Make-It
- Wrinkles, Recipes, Formulas (S. Gernsback)
- Radio Department: Listening for Signals from Mars (Dr. Frederick H. Millener)
- A War-Time Radio Detective (Pierre H. Boucheron)
- Free Radio Course for Ex-Soldiers (William M. Bolger)
- Marconi–The Master Radio Experimenter
- Three Types of Amateur Spark Gaps(Pierre H. Boucheron)
- Special Laboratory Contest
- With the Amateurs
- What To Invent (Jay G. Hobson)
- Latest Patents
- Scientific Humor
- The Oracle
- Patent Advice (H. Gernsback)
- Opportunity Ad-Lets
Publisher: Experimenter Publishing Company, Inc.
Editor: Hugo Gernsback
Issue: Volume 8: Number 3; Whole No. 87; July 1920
Pages: 112
Size: 8-1/4″ x 11-1/2″
Digital edition © 2007 Curtis Philips. All Rights Reserved.