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A Demonstration of Popping Corn Without Heat Has Led to the Development of Electronic Methods of Heating Many Materials --Metallic and Non-Metallic -- by Means of High Frequency Currents. Present Applications are Relatively High in Cost, Yet Bring Many Industrial Advantages
Modern Purification Techniques Have Advanced to the Point Where Valuable By Products are Obtained from Sewage Treatment Processes. Fertilizer, Gas, Grease, and Processing Water are "Manufactured" from the Liquid Wastes Collected in Sewers
Strictly Speaking, Science Doesn't Know. There's Much More Philosophy to the Subject Than Meets the Eye. We Have Testers that Measure Hardness--or so We Think--and then We Define Hardness on a Basis of their Methods, Rather than Vice Versa
The Story of the Conversion of That Popular Glamour Metal, Chromium, to an Essential Machine-Shop Material for the Production Front-Some of its Unsuspected Properties and New Uses, its Conservation Aspects, and its Future Place Among Industrial Materials
Enough Can Now be Told About Synthetic Rubber to Indicate that the Problem of Replacing Natural Rubber in Many Vital Applications Will be Solved Satisfactorily. A Resume of the Most Important Synthetics, Their Composition and Qualities, and Raw Materials Used
Reported Many Years Ago in these Pages, the Armstrong Seadrome is Row Assuming Added Importance in the Scheme of Things to Come in Aviation. Based on Sound Engineering Principles, the Seadrome Will Make Possible Over Ocean Air Transportation with Land Type Planes
Freed by Intensive Research from Dependency on Foreign Sources, the American Dyes Industry is Now Contributing Largely to the Development of All Branches of the Chemical Industry. After the War it Will Be Producing New and Improved Products for Peacetime Consumption