Sounds that Burn
The Human Ear Senses No Vibrations Above 30,000 Per Second, but Inaudible Sounds at 300,000 Vibrations Per Second Perform Queer Antics
Features
Weighing the Earth
The Earth's Mass Is About 6,000,000,000,000,000,000,000 Tons. How Is This Amount Actually Determined?
High-Pressure Steam in Locomotives
Tendency is Toward Still Higher Steam Pressures to Obtain Greater Tractive Effort and Fuel Economy
From the Scrap-book of Science Camera Shots of Scientific Events, March 1928
Sunshine Recorder
Unearthing the Past at Kish
Who Were the Ancient Sumerians? No One Knows. Excavations Now in Progress Give Promise of Solving this Perplexing Historical Mystery
The "Why" of the "S-4" Disaster
The Answer to the Public's Questions As to Why It Happened and Why the Men Could Not Be Rescued
A Smaller, Light-Weight Diesel
Compact, High-Speed Unit Designed for Remote or Bridge Control in Small Craft
Comets
The Past Year Has Provided Several Unusually Interesting Comets. Recent Computations Indicate That One Comet's Orbit Extends Half Way to the Nearest Fixed Star
How Fast Can You "Get Away"?
Simple Measuring Method Shows Surprising Differences in Individuals
Deciphering Mayan Mysteries
How the Archeologist Proceeds with the Baffling Task of Prying into the Secrets of the Hieroglyphs of the Ancient Mayan Chronologists
New Discovery Speeds Up Evolution
Science Prize Winner Makes Discovery Believed By Many to Have Immense Practical and Scientific Significance
A Modern Castle of Business
Handsome Skyscraper is Complete in Itself and Needs Little Outside Aid in Case of Fire
Tuning-Up Transatlantic Motors--II
In Which the Author Deals Interestingly With the Various Specific Tests for Airplane Motors
Wanted--A Radio Fan's Paradise
What the Federal Radio Commission Has Accomplished in its First Year--Plans for the Future
California Amateurs Make Telescopes
Television Enters the Home
Simplification of Apparatus and of Synchronization Opens a New Era for the Broadcast Listener
Theater Delays Shortened
Time Between Changes of Scenes Has Been Reduced to a Minimum by Stage Mechanism of The Patriot.
Outdoor Tractor Model Airplane, Golf-Ball Marking and more
A Department Devoted to the Presentation of Useful Ideas. Material of Value to All Will Be Found Here
Departments
- Departments
Our Point of View, March 1928
The Month in Medical Science, March 1928
Porcelain Socket, New Pullman Bag and more
Safety Jug, Polishing Mitten and more
Biologist Calls Coffee Beneficial Beverage, Swapping Cactus for Pineapple and more
Large Plane Orders, Ingenious Wing Folding and more
Potash from the Dead Sea, Distilled Water by Electrolysis and more
New Power Tube Has Economical Filament, Reflectors are Efficient and more
Ferric Hydroxide as an Adsorbent, Hydrogen Ion Concentration of Cheese and more
England's First Bicycle, From the Candle to Electricity and more
Evolution Reversed by Cornell Scientist, Sheet Steel Manufacture and more
Analogous Arts, Trademarks in The Philippines and more
