Scientific American Magazine Vol 175 Issue 4

Scientific American Magazine

Volume 175, Issue 4

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Features

Tests or "Traditions"?

Conventional Materials Tests and Methods Have a Place—But Only If the Information Gained is Truly Significant in the Light of Actual Product Usage. Simulated-Service Tests are Often Much More Truthful, and May Indicate the Application of Previously Unconsidered Materials

Fred P. Peters

Aluminum vs Copper, Silver "Solder" Base, and more

Making Heat Work Overtime

Basically Simple and Extremely Practical, Compression Distillation is One of Those Processes that Prompts the Unanswerable Question of "Why Hasn't It Been Done Before?" By Complete Heat Utilization, the Method Produces Pure Water Quickly and Economically, Yet Involves No Cooling, Uses Little Space, and Demands a Minimum of Attention

D. H. Killeffer

Paper-Mill Slime

Controlled by Use of Convenient, Packaged Chemical

Departments Without Names

Most Executives in Most Departments of Industrial Organizations are Too Specialized and Too Busy to Obtain a Bird's-Eye View of Their Firm's Integration in the Economic Matrix. Cognizant of These Facts, Many Companies are Establishing Departments--Sometimes of One Man--to Keep an Ear to the Ground and a Keen Eye on the Horizon

Edwin Laird Cady

"Butter-Layers," Aircraft Techniques

Layer-Cake Plastics

Not Always Made as Simply as Their Appearance and Applications Might Suggest, Plastics Products--Fountain Pens, for Example--Frequently Undergo a Number of Carefully Planned Fabrication Stages

Charles A. Breskin

Ice-Cube Tray, Excavator Window

Cabins Can be Quieter

Airline and Private Plane Manufacturers—More "Customer-Conscious" Than Ever Before—Are Striving Vigorously to Improve Cabin Comfort

Alexander Klemin

Flying Wing, Plane Comfort Quiz

Multi-Purpose Paradox

Until All Machines Use Similar Bearings Under Like Load Conditions, "All-Purpose" Greases Remain Impractical. Multi-Purpose Greases are Available, However, and When Common Sense Indicates Their Use They Can Save Time, Reduce Inventories, and Eliminate Confusion

E. F. Lindsley, T. G. Roehner

Paint Removal, Plastisols

Mixed Metal Magic

Jumbled Alloy Stocks and Parts can Now be Re-Identified by Using the Small Current Generated when Dissimilar Metals Rub Together. Direct-Reading Spectrometers Speed Analysis, Cut Down Costly Furnace Time

Keith Henney, John Markus

Plastics Balls, Horseshoes, and more

Looking to The Light

Refuting the Belief that Modern, Engineered Lighting Must Always be Costly and Involve Extensive Re-Building, the Bowditch Grade School Experiment is Cheerful Proof to the Contrary. Standard Fixtures, A Little Paint, and A Lot of Thought were the Keys to Better Seeing

Color Chip Manual, Spot-Welder, and more

Band-Saw Lubricator, Humidity Tester, and more

Departments

50 and 100 Years Ago, October 1946

Previews of the Industrial Horizon, October 1946

Current Bulletin Briefs, October 1946

Our Book Corner, October 1946

Telescoptics, October 1946